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Finding the Fourth Proportional to 13,562.61, 18,708.11 and 8,963.38

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Solution

The fourth proportional to 13,562.61, 18,708.11 and 8,963.38 is: 12,363.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,562.61 : 18,708.11 = 8,963.38 : x
  2. Step 2: Convert to fraction form
    13,562.61/18,708.11 = 8,963.38/x
  3. Step 3: Cross multiply
    13,562.61x = 18,708.11 × 8,963.38
  4. Step 4: Simplify right side
    13,562.61x = 167,687,856.38
  5. Step 5: Solve for x
    x = 167,687,856.38/13,562.61
  6. Step 6: Final answer
    x = 12,363.98

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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.