Home / 31,344.10-43,243.51-20,594.76

Finding the Fourth Proportional to 31,344.10, 43,243.51 and 20,594.76

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Solution

The fourth proportional to 31,344.10, 43,243.51 and 20,594.76 is: 28,413.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,344.10 : 43,243.51 = 20,594.76 : x
  2. Step 2: Convert to fraction form
    31,344.10/43,243.51 = 20,594.76/x
  3. Step 3: Cross multiply
    31,344.10x = 43,243.51 × 20,594.76
  4. Step 4: Simplify right side
    31,344.10x = 890,589,604.47
  5. Step 5: Solve for x
    x = 890,589,604.47/31,344.10
  6. Step 6: Final answer
    x = 28,413.31

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Find fourth proportional to 15,672.05, 21,621.75 and 10,297.38
Half scale
Find fourth proportional to 62,688.20, 86,487.02 and 41,189.52
Double scale
Find fourth proportional to 31,345.10, 43,244.89 and 20,595.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.