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Finding the Fourth Proportional to 11,839.59, 17,758.02 and 9,877.71

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Solution

The fourth proportional to 11,839.59, 17,758.02 and 9,877.71 is: 14,815.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,839.59 : 17,758.02 = 9,877.71 : x
  2. Step 2: Convert to fraction form
    11,839.59/17,758.02 = 9,877.71/x
  3. Step 3: Cross multiply
    11,839.59x = 17,758.02 × 9,877.71
  4. Step 4: Simplify right side
    11,839.59x = 175,408,571.73
  5. Step 5: Solve for x
    x = 175,408,571.73/11,839.59
  6. Step 6: Final answer
    x = 14,815.43

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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.