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Finding the Fourth Proportional to 10,879.84, 15,007.03 and 8,517.88

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Solution

The fourth proportional to 10,879.84, 15,007.03 and 8,517.88 is: 11,749.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,879.84 : 15,007.03 = 8,517.88 : x
  2. Step 2: Convert to fraction form
    10,879.84/15,007.03 = 8,517.88/x
  3. Step 3: Cross multiply
    10,879.84x = 15,007.03 × 8,517.88
  4. Step 4: Simplify right side
    10,879.84x = 127,828,080.70
  5. Step 5: Solve for x
    x = 127,828,080.70/10,879.84
  6. Step 6: Final answer
    x = 11,749.08

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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.