Home / 27,779.38-38,335.54-15,204.12

Finding the Fourth Proportional to 27,779.38, 38,335.54 and 15,204.12

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Solution

The fourth proportional to 27,779.38, 38,335.54 and 15,204.12 is: 20,981.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,779.38 : 38,335.54 = 15,204.12 : x
  2. Step 2: Convert to fraction form
    27,779.38/38,335.54 = 15,204.12/x
  3. Step 3: Cross multiply
    27,779.38x = 38,335.54 × 15,204.12
  4. Step 4: Simplify right side
    27,779.38x = 582,858,150.42
  5. Step 5: Solve for x
    x = 582,858,150.42/27,779.38
  6. Step 6: Final answer
    x = 20,981.68

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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.