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Finding the Fourth Proportional to 18,517.76, 27,757.92 and 9,264.32

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Solution

The fourth proportional to 18,517.76, 27,757.92 and 9,264.32 is: 13,887.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,517.76 : 27,757.92 = 9,264.32 : x
  2. Step 2: Convert to fraction form
    18,517.76/27,757.92 = 9,264.32/x
  3. Step 3: Cross multiply
    18,517.76x = 27,757.92 × 9,264.32
  4. Step 4: Simplify right side
    18,517.76x = 257,158,253.41
  5. Step 5: Solve for x
    x = 257,158,253.41/18,517.76
  6. Step 6: Final answer
    x = 13,887.11

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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.