Home / 39,711.13-54,801.81-21,805.73

Finding the Fourth Proportional to 39,711.13, 54,801.81 and 21,805.73

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Solution

The fourth proportional to 39,711.13, 54,801.81 and 21,805.73 is: 30,092.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,711.13 : 54,801.81 = 21,805.73 : x
  2. Step 2: Convert to fraction form
    39,711.13/54,801.81 = 21,805.73/x
  3. Step 3: Cross multiply
    39,711.13x = 54,801.81 × 21,805.73
  4. Step 4: Simplify right side
    39,711.13x = 1,194,993,472.37
  5. Step 5: Solve for x
    x = 1,194,993,472.37/39,711.13
  6. Step 6: Final answer
    x = 30,092.15

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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.