Home / 38,143.50-52,640.19-21,377.58

Finding the Fourth Proportional to 38,143.50, 52,640.19 and 21,377.58

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Solution

The fourth proportional to 38,143.50, 52,640.19 and 21,377.58 is: 29,502.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,143.50 : 52,640.19 = 21,377.58 : x
  2. Step 2: Convert to fraction form
    38,143.50/52,640.19 = 21,377.58/x
  3. Step 3: Cross multiply
    38,143.50x = 52,640.19 × 21,377.58
  4. Step 4: Simplify right side
    38,143.50x = 1,125,319,872.94
  5. Step 5: Solve for x
    x = 1,125,319,872.94/38,143.50
  6. Step 6: Final answer
    x = 29,502.27

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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.