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Finding the Fourth Proportional to 12,462.96, 18,708.12 and 6,221.22

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Solution

The fourth proportional to 12,462.96, 18,708.12 and 6,221.22 is: 9,338.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,462.96 : 18,708.12 = 6,221.22 : x
  2. Step 2: Convert to fraction form
    12,462.96/18,708.12 = 6,221.22/x
  3. Step 3: Cross multiply
    12,462.96x = 18,708.12 × 6,221.22
  4. Step 4: Simplify right side
    12,462.96x = 116,387,330.31
  5. Step 5: Solve for x
    x = 116,387,330.31/12,462.96
  6. Step 6: Final answer
    x = 9,338.66

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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.