Home / 38,490.38-53,116.22-21,494.92

Finding the Fourth Proportional to 38,490.38, 53,116.22 and 21,494.92

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Solution

The fourth proportional to 38,490.38, 53,116.22 and 21,494.92 is: 29,662.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,490.38 : 53,116.22 = 21,494.92 : x
  2. Step 2: Convert to fraction form
    38,490.38/53,116.22 = 21,494.92/x
  3. Step 3: Cross multiply
    38,490.38x = 53,116.22 × 21,494.92
  4. Step 4: Simplify right side
    38,490.38x = 1,141,728,899.60
  5. Step 5: Solve for x
    x = 1,141,728,899.60/38,490.38
  6. Step 6: Final answer
    x = 29,662.71

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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.