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Finding the Fourth Proportional to 39,404.73, 54,377.47 and 21,499.73

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Solution

The fourth proportional to 39,404.73, 54,377.47 and 21,499.73 is: 29,669.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,404.73 : 54,377.47 = 21,499.73 : x
  2. Step 2: Convert to fraction form
    39,404.73/54,377.47 = 21,499.73/x
  3. Step 3: Cross multiply
    39,404.73x = 54,377.47 × 21,499.73
  4. Step 4: Simplify right side
    39,404.73x = 1,169,100,923.08
  5. Step 5: Solve for x
    x = 1,169,100,923.08/39,404.73
  6. Step 6: Final answer
    x = 29,669.05

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Double scale
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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.