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Finding the Fourth Proportional to 9,913.32, 14,888.49 and 8,727.78

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Solution

The fourth proportional to 9,913.32, 14,888.49 and 8,727.78 is: 13,107.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,913.32 : 14,888.49 = 8,727.78 : x
  2. Step 2: Convert to fraction form
    9,913.32/14,888.49 = 8,727.78/x
  3. Step 3: Cross multiply
    9,913.32x = 14,888.49 × 8,727.78
  4. Step 4: Simplify right side
    9,913.32x = 129,943,465.25
  5. Step 5: Solve for x
    x = 129,943,465.25/9,913.32
  6. Step 6: Final answer
    x = 13,107.97

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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.