Home / 21,449.20-32,138.22-15,178.12

Finding the Fourth Proportional to 21,449.20, 32,138.22 and 15,178.12

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Solution

The fourth proportional to 21,449.20, 32,138.22 and 15,178.12 is: 22,742.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,449.20 : 32,138.22 = 15,178.12 : x
  2. Step 2: Convert to fraction form
    21,449.20/32,138.22 = 15,178.12/x
  3. Step 3: Cross multiply
    21,449.20x = 32,138.22 × 15,178.12
  4. Step 4: Simplify right side
    21,449.20x = 487,797,759.75
  5. Step 5: Solve for x
    x = 487,797,759.75/21,449.20
  6. Step 6: Final answer
    x = 22,742.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.