Home / 39,708.28-54,787.20-23,781.40

Finding the Fourth Proportional to 39,708.28, 54,787.20 and 23,781.40

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Solution

The fourth proportional to 39,708.28, 54,787.20 and 23,781.40 is: 32,812.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,708.28 : 54,787.20 = 23,781.40 : x
  2. Step 2: Convert to fraction form
    39,708.28/54,787.20 = 23,781.40/x
  3. Step 3: Cross multiply
    39,708.28x = 54,787.20 × 23,781.40
  4. Step 4: Simplify right side
    39,708.28x = 1,302,916,318.08
  5. Step 5: Solve for x
    x = 1,302,916,318.08/39,708.28
  6. Step 6: Final answer
    x = 32,812.21

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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.