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Finding the Fourth Proportional to 15,647.97, 23,472.09 and 12,520.22

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Solution

The fourth proportional to 15,647.97, 23,472.09 and 12,520.22 is: 18,780.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,647.97 : 23,472.09 = 12,520.22 : x
  2. Step 2: Convert to fraction form
    15,647.97/23,472.09 = 12,520.22/x
  3. Step 3: Cross multiply
    15,647.97x = 23,472.09 × 12,520.22
  4. Step 4: Simplify right side
    15,647.97x = 293,875,789.34
  5. Step 5: Solve for x
    x = 293,875,789.34/15,647.97
  6. Step 6: Final answer
    x = 18,780.44

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1.5x scale

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.