Home / 21,191.61-29,250.14-13,229.04

Finding the Fourth Proportional to 21,191.61, 29,250.14 and 13,229.04

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Solution

The fourth proportional to 21,191.61, 29,250.14 and 13,229.04 is: 18,259.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,191.61 : 29,250.14 = 13,229.04 : x
  2. Step 2: Convert to fraction form
    21,191.61/29,250.14 = 13,229.04/x
  3. Step 3: Cross multiply
    21,191.61x = 29,250.14 × 13,229.04
  4. Step 4: Simplify right side
    21,191.61x = 386,951,205.92
  5. Step 5: Solve for x
    x = 386,951,205.92/21,191.61
  6. Step 6: Final answer
    x = 18,259.64

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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.