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Finding the Fourth Proportional to 12,479.42, 17,223.17 and 8,001.54

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Solution

The fourth proportional to 12,479.42, 17,223.17 and 8,001.54 is: 11,043.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,479.42 : 17,223.17 = 8,001.54 : x
  2. Step 2: Convert to fraction form
    12,479.42/17,223.17 = 8,001.54/x
  3. Step 3: Cross multiply
    12,479.42x = 17,223.17 × 8,001.54
  4. Step 4: Simplify right side
    12,479.42x = 137,811,843.67
  5. Step 5: Solve for x
    x = 137,811,843.67/12,479.42
  6. Step 6: Final answer
    x = 11,043.13

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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.