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Finding the Fourth Proportional to 18,083.70, 27,125.55 and 8,695.13

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Solution

The fourth proportional to 18,083.70, 27,125.55 and 8,695.13 is: 13,042.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,083.70 : 27,125.55 = 8,695.13 : x
  2. Step 2: Convert to fraction form
    18,083.70/27,125.55 = 8,695.13/x
  3. Step 3: Cross multiply
    18,083.70x = 27,125.55 × 8,695.13
  4. Step 4: Simplify right side
    18,083.70x = 235,860,047.94
  5. Step 5: Solve for x
    x = 235,860,047.94/18,083.70
  6. Step 6: Final answer
    x = 13,042.69

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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.