Home / 10,917.97-16,376.90-3,126.78

Finding the Fourth Proportional to 10,917.97, 16,376.90 and 3,126.78

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Solution

The fourth proportional to 10,917.97, 16,376.90 and 3,126.78 is: 4,690.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,917.97 : 16,376.90 = 3,126.78 : x
  2. Step 2: Convert to fraction form
    10,917.97/16,376.90 = 3,126.78/x
  3. Step 3: Cross multiply
    10,917.97x = 16,376.90 × 3,126.78
  4. Step 4: Simplify right side
    10,917.97x = 51,206,963.38
  5. Step 5: Solve for x
    x = 51,206,963.38/10,917.97
  6. Step 6: Final answer
    x = 4,690.15

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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.