Home / 27,358.60-37,755.12-15,420.88

Finding the Fourth Proportional to 27,358.60, 37,755.12 and 15,420.88

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Solution

The fourth proportional to 27,358.60, 37,755.12 and 15,420.88 is: 21,280.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,358.60 : 37,755.12 = 15,420.88 : x
  2. Step 2: Convert to fraction form
    27,358.60/37,755.12 = 15,420.88/x
  3. Step 3: Cross multiply
    27,358.60x = 37,755.12 × 15,420.88
  4. Step 4: Simplify right side
    27,358.60x = 582,217,174.91
  5. Step 5: Solve for x
    x = 582,217,174.91/27,358.60
  6. Step 6: Final answer
    x = 21,280.96

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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.