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Finding the Fourth Proportional to 11,411.12, 15,747.18 and 6,375.83

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Solution

The fourth proportional to 11,411.12, 15,747.18 and 6,375.83 is: 8,798.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,411.12 : 15,747.18 = 6,375.83 : x
  2. Step 2: Convert to fraction form
    11,411.12/15,747.18 = 6,375.83/x
  3. Step 3: Cross multiply
    11,411.12x = 15,747.18 × 6,375.83
  4. Step 4: Simplify right side
    11,411.12x = 100,401,263.92
  5. Step 5: Solve for x
    x = 100,401,263.92/11,411.12
  6. Step 6: Final answer
    x = 8,798.55

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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.