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Finding the Fourth Proportional to 11,989.62, 16,547.82 and 7,517.20

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Solution

The fourth proportional to 11,989.62, 16,547.82 and 7,517.20 is: 10,375.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,989.62 : 16,547.82 = 7,517.20 : x
  2. Step 2: Convert to fraction form
    11,989.62/16,547.82 = 7,517.20/x
  3. Step 3: Cross multiply
    11,989.62x = 16,547.82 × 7,517.20
  4. Step 4: Simplify right side
    11,989.62x = 124,393,272.50
  5. Step 5: Solve for x
    x = 124,393,272.50/11,989.62
  6. Step 6: Final answer
    x = 10,375.08

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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.