Home / 38,138.92-52,631.71-21,143.12

Finding the Fourth Proportional to 38,138.92, 52,631.71 and 21,143.12

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Solution

The fourth proportional to 38,138.92, 52,631.71 and 21,143.12 is: 29,177.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,138.92 : 52,631.71 = 21,143.12 : x
  2. Step 2: Convert to fraction form
    38,138.92/52,631.71 = 21,143.12/x
  3. Step 3: Cross multiply
    38,138.92x = 52,631.71 × 21,143.12
  4. Step 4: Simplify right side
    38,138.92x = 1,112,798,244.32
  5. Step 5: Solve for x
    x = 1,112,798,244.32/38,138.92
  6. Step 6: Final answer
    x = 29,177.50

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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.