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Finding the Fourth Proportional to 10,532.63, 15,795.78 and 8,679.15

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Solution

The fourth proportional to 10,532.63, 15,795.78 and 8,679.15 is: 13,016.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,532.63 : 15,795.78 = 8,679.15 : x
  2. Step 2: Convert to fraction form
    10,532.63/15,795.78 = 8,679.15/x
  3. Step 3: Cross multiply
    10,532.63x = 15,795.78 × 8,679.15
  4. Step 4: Simplify right side
    10,532.63x = 137,093,911.44
  5. Step 5: Solve for x
    x = 137,093,911.44/10,532.63
  6. Step 6: Final answer
    x = 13,016.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.