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Finding the Fourth Proportional to 10,961.62, 15,128.13 and 6,246.10

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Solution

The fourth proportional to 10,961.62, 15,128.13 and 6,246.10 is: 8,620.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,961.62 : 15,128.13 = 6,246.10 : x
  2. Step 2: Convert to fraction form
    10,961.62/15,128.13 = 6,246.10/x
  3. Step 3: Cross multiply
    10,961.62x = 15,128.13 × 6,246.10
  4. Step 4: Simplify right side
    10,961.62x = 94,491,812.79
  5. Step 5: Solve for x
    x = 94,491,812.79/10,961.62
  6. Step 6: Final answer
    x = 8,620.24

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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.