Home / 21,321.26-29,423.38-12,369.46

Finding the Fourth Proportional to 21,321.26, 29,423.38 and 12,369.46

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Solution

The fourth proportional to 21,321.26, 29,423.38 and 12,369.46 is: 17,069.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,321.26 : 29,423.38 = 12,369.46 : x
  2. Step 2: Convert to fraction form
    21,321.26/29,423.38 = 12,369.46/x
  3. Step 3: Cross multiply
    21,321.26x = 29,423.38 × 12,369.46
  4. Step 4: Simplify right side
    21,321.26x = 363,951,321.97
  5. Step 5: Solve for x
    x = 363,951,321.97/21,321.26
  6. Step 6: Final answer
    x = 17,069.88

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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.