Home / 39,545.09-54,572.22-21,640.10

Finding the Fourth Proportional to 39,545.09, 54,572.22 and 21,640.10

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Solution

The fourth proportional to 39,545.09, 54,572.22 and 21,640.10 is: 29,863.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,545.09 : 54,572.22 = 21,640.10 : x
  2. Step 2: Convert to fraction form
    39,545.09/54,572.22 = 21,640.10/x
  3. Step 3: Cross multiply
    39,545.09x = 54,572.22 × 21,640.10
  4. Step 4: Simplify right side
    39,545.09x = 1,180,948,298.02
  5. Step 5: Solve for x
    x = 1,180,948,298.02/39,545.09
  6. Step 6: Final answer
    x = 29,863.34

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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.