Home / 21,344.68-29,455.92-12,392.56

Finding the Fourth Proportional to 21,344.68, 29,455.92 and 12,392.56

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Solution

The fourth proportional to 21,344.68, 29,455.92 and 12,392.56 is: 17,101.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,344.68 : 29,455.92 = 12,392.56 : x
  2. Step 2: Convert to fraction form
    21,344.68/29,455.92 = 12,392.56/x
  3. Step 3: Cross multiply
    21,344.68x = 29,455.92 × 12,392.56
  4. Step 4: Simplify right side
    21,344.68x = 365,034,255.96
  5. Step 5: Solve for x
    x = 365,034,255.96/21,344.68
  6. Step 6: Final answer
    x = 17,101.88

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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.