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Finding the Fourth Proportional to 15,200.73, 20,977.03 and 8,486.35

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Solution

The fourth proportional to 15,200.73, 20,977.03 and 8,486.35 is: 11,711.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,200.73 : 20,977.03 = 8,486.35 : x
  2. Step 2: Convert to fraction form
    15,200.73/20,977.03 = 8,486.35/x
  3. Step 3: Cross multiply
    15,200.73x = 20,977.03 × 8,486.35
  4. Step 4: Simplify right side
    15,200.73x = 178,018,446.97
  5. Step 5: Solve for x
    x = 178,018,446.97/15,200.73
  6. Step 6: Final answer
    x = 11,711.18

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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.