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Finding the Fourth Proportional to 12,543.75, 17,296.18 and 8,000.35

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Solution

The fourth proportional to 12,543.75, 17,296.18 and 8,000.35 is: 11,031.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,543.75 : 17,296.18 = 8,000.35 : x
  2. Step 2: Convert to fraction form
    12,543.75/17,296.18 = 8,000.35/x
  3. Step 3: Cross multiply
    12,543.75x = 17,296.18 × 8,000.35
  4. Step 4: Simplify right side
    12,543.75x = 138,375,473.66
  5. Step 5: Solve for x
    x = 138,375,473.66/12,543.75
  6. Step 6: Final answer
    x = 11,031.43

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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.