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Finding the Fourth Proportional to 8,635.11, 11,921.54 and 8,136.89

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Solution

The fourth proportional to 8,635.11, 11,921.54 and 8,136.89 is: 11,233.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,635.11 : 11,921.54 = 8,136.89 : x
  2. Step 2: Convert to fraction form
    8,635.11/11,921.54 = 8,136.89/x
  3. Step 3: Cross multiply
    8,635.11x = 11,921.54 × 8,136.89
  4. Step 4: Simplify right side
    8,635.11x = 97,004,259.61
  5. Step 5: Solve for x
    x = 97,004,259.61/8,635.11
  6. Step 6: Final answer
    x = 11,233.70

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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.