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Finding the Fourth Proportional to 12,806.68, 17,679.12 and 9,032.92

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Solution

The fourth proportional to 12,806.68, 17,679.12 and 9,032.92 is: 12,469.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,806.68 : 17,679.12 = 9,032.92 : x
  2. Step 2: Convert to fraction form
    12,806.68/17,679.12 = 9,032.92/x
  3. Step 3: Cross multiply
    12,806.68x = 17,679.12 × 9,032.92
  4. Step 4: Simplify right side
    12,806.68x = 159,694,076.63
  5. Step 5: Solve for x
    x = 159,694,076.63/12,806.68
  6. Step 6: Final answer
    x = 12,469.59

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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.