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Finding the Fourth Proportional to 27,978.22, 38,610.79 and 15,232.24

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Solution

The fourth proportional to 27,978.22, 38,610.79 and 15,232.24 is: 21,020.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,978.22 : 38,610.79 = 15,232.24 : x
  2. Step 2: Convert to fraction form
    27,978.22/38,610.79 = 15,232.24/x
  3. Step 3: Cross multiply
    27,978.22x = 38,610.79 × 15,232.24
  4. Step 4: Simplify right side
    27,978.22x = 588,128,819.87
  5. Step 5: Solve for x
    x = 588,128,819.87/27,978.22
  6. Step 6: Final answer
    x = 21,020.95

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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.