Home / 31,437.66-43,406.19-20,849.34

Finding the Fourth Proportional to 31,437.66, 43,406.19 and 20,849.34

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Solution

The fourth proportional to 31,437.66, 43,406.19 and 20,849.34 is: 28,786.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,437.66 : 43,406.19 = 20,849.34 : x
  2. Step 2: Convert to fraction form
    31,437.66/43,406.19 = 20,849.34/x
  3. Step 3: Cross multiply
    31,437.66x = 43,406.19 × 20,849.34
  4. Step 4: Simplify right side
    31,437.66x = 904,990,413.41
  5. Step 5: Solve for x
    x = 904,990,413.41/31,437.66
  6. Step 6: Final answer
    x = 28,786.82

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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.