Home / 15,454.46-21,327.06-8,380.88

Finding the Fourth Proportional to 15,454.46, 21,327.06 and 8,380.88

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Solution

The fourth proportional to 15,454.46, 21,327.06 and 8,380.88 is: 11,565.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,454.46 : 21,327.06 = 8,380.88 : x
  2. Step 2: Convert to fraction form
    15,454.46/21,327.06 = 8,380.88/x
  3. Step 3: Cross multiply
    15,454.46x = 21,327.06 × 8,380.88
  4. Step 4: Simplify right side
    15,454.46x = 178,739,530.61
  5. Step 5: Solve for x
    x = 178,739,530.61/15,454.46
  6. Step 6: Final answer
    x = 11,565.56

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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.