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Finding the Fourth Proportional to 10,961.64, 15,127.04 and 6,245.92

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Solution

The fourth proportional to 10,961.64, 15,127.04 and 6,245.92 is: 8,619.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,961.64 : 15,127.04 = 6,245.92 : x
  2. Step 2: Convert to fraction form
    10,961.64/15,127.04 = 6,245.92/x
  3. Step 3: Cross multiply
    10,961.64x = 15,127.04 × 6,245.92
  4. Step 4: Simplify right side
    10,961.64x = 94,482,281.68
  5. Step 5: Solve for x
    x = 94,482,281.68/10,961.64
  6. Step 6: Final answer
    x = 8,619.36

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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.