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Finding the Fourth Proportional to 8,885.18, 13,327.89 and 8,614.55

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Solution

The fourth proportional to 8,885.18, 13,327.89 and 8,614.55 is: 12,921.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,885.18 : 13,327.89 = 8,614.55 : x
  2. Step 2: Convert to fraction form
    8,885.18/13,327.89 = 8,614.55/x
  3. Step 3: Cross multiply
    8,885.18x = 13,327.89 × 8,614.55
  4. Step 4: Simplify right side
    8,885.18x = 114,813,708.16
  5. Step 5: Solve for x
    x = 114,813,708.16/8,885.18
  6. Step 6: Final answer
    x = 12,921.94

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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.