Home / 38,455.35-53,068.40-21,227.73

Finding the Fourth Proportional to 38,455.35, 53,068.40 and 21,227.73

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Solution

The fourth proportional to 38,455.35, 53,068.40 and 21,227.73 is: 29,294.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,455.35 : 53,068.40 = 21,227.73 : x
  2. Step 2: Convert to fraction form
    38,455.35/53,068.40 = 21,227.73/x
  3. Step 3: Cross multiply
    38,455.35x = 53,068.40 × 21,227.73
  4. Step 4: Simplify right side
    38,455.35x = 1,126,521,640.20
  5. Step 5: Solve for x
    x = 1,126,521,640.20/38,455.35
  6. Step 6: Final answer
    x = 29,294.27

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Half scale
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Double scale
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Similar ratio
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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.