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Finding the Fourth Proportional to 12,446.85, 17,168.92 and 7,407.64

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Solution

The fourth proportional to 12,446.85, 17,168.92 and 7,407.64 is: 10,217.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,446.85 : 17,168.92 = 7,407.64 : x
  2. Step 2: Convert to fraction form
    12,446.85/17,168.92 = 7,407.64/x
  3. Step 3: Cross multiply
    12,446.85x = 17,168.92 × 7,407.64
  4. Step 4: Simplify right side
    12,446.85x = 127,181,178.55
  5. Step 5: Solve for x
    x = 127,181,178.55/12,446.85
  6. Step 6: Final answer
    x = 10,217.94

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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.