Home / 39,545.28-54,572.64-21,640.44

Finding the Fourth Proportional to 39,545.28, 54,572.64 and 21,640.44

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Solution

The fourth proportional to 39,545.28, 54,572.64 and 21,640.44 is: 29,863.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,545.28 : 54,572.64 = 21,640.44 : x
  2. Step 2: Convert to fraction form
    39,545.28/54,572.64 = 21,640.44/x
  3. Step 3: Cross multiply
    39,545.28x = 54,572.64 × 21,640.44
  4. Step 4: Simplify right side
    39,545.28x = 1,180,975,941.56
  5. Step 5: Solve for x
    x = 1,180,975,941.56/39,545.28
  6. Step 6: Final answer
    x = 29,863.89

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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.