Home / 31,338.96-43,219.44-20,739.12

Finding the Fourth Proportional to 31,338.96, 43,219.44 and 20,739.12

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Solution

The fourth proportional to 31,338.96, 43,219.44 and 20,739.12 is: 28,601.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,338.96 : 43,219.44 = 20,739.12 : x
  2. Step 2: Convert to fraction form
    31,338.96/43,219.44 = 20,739.12/x
  3. Step 3: Cross multiply
    31,338.96x = 43,219.44 × 20,739.12
  4. Step 4: Simplify right side
    31,338.96x = 896,333,152.49
  5. Step 5: Solve for x
    x = 896,333,152.49/31,338.96
  6. Step 6: Final answer
    x = 28,601.24

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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.