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Finding the Fourth Proportional to 15,040.30, 20,755.08 and 8,234.02

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Solution

The fourth proportional to 15,040.30, 20,755.08 and 8,234.02 is: 11,362.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,040.30 : 20,755.08 = 8,234.02 : x
  2. Step 2: Convert to fraction form
    15,040.30/20,755.08 = 8,234.02/x
  3. Step 3: Cross multiply
    15,040.30x = 20,755.08 × 8,234.02
  4. Step 4: Simplify right side
    15,040.30x = 170,897,743.82
  5. Step 5: Solve for x
    x = 170,897,743.82/15,040.30
  6. Step 6: Final answer
    x = 11,362.66

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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.