Home / 39,439.38-54,426.54-21,534.48

Finding the Fourth Proportional to 39,439.38, 54,426.54 and 21,534.48

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Solution

The fourth proportional to 39,439.38, 54,426.54 and 21,534.48 is: 29,717.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,439.38 : 54,426.54 = 21,534.48 : x
  2. Step 2: Convert to fraction form
    39,439.38/54,426.54 = 21,534.48/x
  3. Step 3: Cross multiply
    39,439.38x = 54,426.54 × 21,534.48
  4. Step 4: Simplify right side
    39,439.38x = 1,172,047,237.10
  5. Step 5: Solve for x
    x = 1,172,047,237.10/39,439.38
  6. Step 6: Final answer
    x = 29,717.69

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Half scale
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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.