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Finding the Fourth Proportional to 10,107.66, 15,108.09 and 8,780.88

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Solution

The fourth proportional to 10,107.66, 15,108.09 and 8,780.88 is: 13,124.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,107.66 : 15,108.09 = 8,780.88 : x
  2. Step 2: Convert to fraction form
    10,107.66/15,108.09 = 8,780.88/x
  3. Step 3: Cross multiply
    10,107.66x = 15,108.09 × 8,780.88
  4. Step 4: Simplify right side
    10,107.66x = 132,662,325.32
  5. Step 5: Solve for x
    x = 132,662,325.32/10,107.66
  6. Step 6: Final answer
    x = 13,124.93

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.