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Finding the Fourth Proportional to 12,245.43, 16,879.15 and 9,654.13

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Solution

The fourth proportional to 12,245.43, 16,879.15 and 9,654.13 is: 13,307.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,245.43 : 16,879.15 = 9,654.13 : x
  2. Step 2: Convert to fraction form
    12,245.43/16,879.15 = 9,654.13/x
  3. Step 3: Cross multiply
    12,245.43x = 16,879.15 × 9,654.13
  4. Step 4: Simplify right side
    12,245.43x = 162,953,541.56
  5. Step 5: Solve for x
    x = 162,953,541.56/12,245.43
  6. Step 6: Final answer
    x = 13,307.29

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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.