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Finding the Fourth Proportional to 15,066.56, 20,791.80 and 8,442.56

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Solution

The fourth proportional to 15,066.56, 20,791.80 and 8,442.56 is: 11,650.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,066.56 : 20,791.80 = 8,442.56 : x
  2. Step 2: Convert to fraction form
    15,066.56/20,791.80 = 8,442.56/x
  3. Step 3: Cross multiply
    15,066.56x = 20,791.80 × 8,442.56
  4. Step 4: Simplify right side
    15,066.56x = 175,536,019.01
  5. Step 5: Solve for x
    x = 175,536,019.01/15,066.56
  6. Step 6: Final answer
    x = 11,650.70

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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.