Home / 21,343.17-29,454.86-11,912.34

Finding the Fourth Proportional to 21,343.17, 29,454.86 and 11,912.34

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Solution

The fourth proportional to 21,343.17, 29,454.86 and 11,912.34 is: 16,439.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,343.17 : 29,454.86 = 11,912.34 : x
  2. Step 2: Convert to fraction form
    21,343.17/29,454.86 = 11,912.34/x
  3. Step 3: Cross multiply
    21,343.17x = 29,454.86 × 11,912.34
  4. Step 4: Simplify right side
    21,343.17x = 350,876,306.97
  5. Step 5: Solve for x
    x = 350,876,306.97/21,343.17
  6. Step 6: Final answer
    x = 16,439.75

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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.