Home / 39,545.30-54,572.52-21,640.31

Finding the Fourth Proportional to 39,545.30, 54,572.52 and 21,640.31

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Solution

The fourth proportional to 39,545.30, 54,572.52 and 21,640.31 is: 29,863.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,545.30 : 54,572.52 = 21,640.31 : x
  2. Step 2: Convert to fraction form
    39,545.30/54,572.52 = 21,640.31/x
  3. Step 3: Cross multiply
    39,545.30x = 54,572.52 × 21,640.31
  4. Step 4: Simplify right side
    39,545.30x = 1,180,966,141.49
  5. Step 5: Solve for x
    x = 1,180,966,141.49/39,545.30
  6. Step 6: Final answer
    x = 29,863.63

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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.