Home / 10,972.97-16,459.91-3,181.78

Finding the Fourth Proportional to 10,972.97, 16,459.91 and 3,181.78

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Solution

The fourth proportional to 10,972.97, 16,459.91 and 3,181.78 is: 4,772.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,972.97 : 16,459.91 = 3,181.78 : x
  2. Step 2: Convert to fraction form
    10,972.97/16,459.91 = 3,181.78/x
  3. Step 3: Cross multiply
    10,972.97x = 16,459.91 × 3,181.78
  4. Step 4: Simplify right side
    10,972.97x = 52,371,829.04
  5. Step 5: Solve for x
    x = 52,371,829.04/10,972.97
  6. Step 6: Final answer
    x = 4,772.80

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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.