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Finding the Fourth Proportional to 13,251.98, 18,282.48 and 8,539

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Solution

The fourth proportional to 13,251.98, 18,282.48 and 8,539 is: 11,780.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,251.98 : 18,282.48 = 8,539 : x
  2. Step 2: Convert to fraction form
    13,251.98/18,282.48 = 8,539/x
  3. Step 3: Cross multiply
    13,251.98x = 18,282.48 × 8,539
  4. Step 4: Simplify right side
    13,251.98x = 156,114,096.72
  5. Step 5: Solve for x
    x = 156,114,096.72/13,251.98
  6. Step 6: Final answer
    x = 11,780.44

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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.