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Finding the Fourth Proportional to 9,921.88, 14,882.82 and 4,711.96

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Solution

The fourth proportional to 9,921.88, 14,882.82 and 4,711.96 is: 7,067.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,921.88 : 14,882.82 = 4,711.96 : x
  2. Step 2: Convert to fraction form
    9,921.88/14,882.82 = 4,711.96/x
  3. Step 3: Cross multiply
    9,921.88x = 14,882.82 × 4,711.96
  4. Step 4: Simplify right side
    9,921.88x = 70,127,252.53
  5. Step 5: Solve for x
    x = 70,127,252.53/9,921.88
  6. Step 6: Final answer
    x = 7,067.94

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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.