Home / 11,159.87-16,728.12-3,761.78

Finding the Fourth Proportional to 11,159.87, 16,728.12 and 3,761.78

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Solution

The fourth proportional to 11,159.87, 16,728.12 and 3,761.78 is: 5,638.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,159.87 : 16,728.12 = 3,761.78 : x
  2. Step 2: Convert to fraction form
    11,159.87/16,728.12 = 3,761.78/x
  3. Step 3: Cross multiply
    11,159.87x = 16,728.12 × 3,761.78
  4. Step 4: Simplify right side
    11,159.87x = 62,927,423.61
  5. Step 5: Solve for x
    x = 62,927,423.61/11,159.87
  6. Step 6: Final answer
    x = 5,638.72

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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.