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Finding the Fourth Proportional to 9,888.72, 14,891.32 and 7,134.80

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Solution

The fourth proportional to 9,888.72, 14,891.32 and 7,134.80 is: 10,744.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,888.72 : 14,891.32 = 7,134.80 : x
  2. Step 2: Convert to fraction form
    9,888.72/14,891.32 = 7,134.80/x
  3. Step 3: Cross multiply
    9,888.72x = 14,891.32 × 7,134.80
  4. Step 4: Simplify right side
    9,888.72x = 106,246,589.94
  5. Step 5: Solve for x
    x = 106,246,589.94/9,888.72
  6. Step 6: Final answer
    x = 10,744.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.