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Finding the Fourth Proportional to 17,139.52, 25,718.96 and 7,905.52

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Solution

The fourth proportional to 17,139.52, 25,718.96 and 7,905.52 is: 11,862.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,139.52 : 25,718.96 = 7,905.52 : x
  2. Step 2: Convert to fraction form
    17,139.52/25,718.96 = 7,905.52/x
  3. Step 3: Cross multiply
    17,139.52x = 25,718.96 × 7,905.52
  4. Step 4: Simplify right side
    17,139.52x = 203,321,752.66
  5. Step 5: Solve for x
    x = 203,321,752.66/17,139.52
  6. Step 6: Final answer
    x = 11,862.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.