Home / 21,331.50-29,438.27-11,901.88

Finding the Fourth Proportional to 21,331.50, 29,438.27 and 11,901.88

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Solution

The fourth proportional to 21,331.50, 29,438.27 and 11,901.88 is: 16,425.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,331.50 : 29,438.27 = 11,901.88 : x
  2. Step 2: Convert to fraction form
    21,331.50/29,438.27 = 11,901.88/x
  3. Step 3: Cross multiply
    21,331.50x = 29,438.27 × 11,901.88
  4. Step 4: Simplify right side
    21,331.50x = 350,370,756.95
  5. Step 5: Solve for x
    x = 350,370,756.95/21,331.50
  6. Step 6: Final answer
    x = 16,425.04

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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.