Home / 15,454.15-21,326.61-8,380.56

Finding the Fourth Proportional to 15,454.15, 21,326.61 and 8,380.56

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Solution

The fourth proportional to 15,454.15, 21,326.61 and 8,380.56 is: 11,565.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,454.15 : 21,326.61 = 8,380.56 : x
  2. Step 2: Convert to fraction form
    15,454.15/21,326.61 = 8,380.56/x
  3. Step 3: Cross multiply
    15,454.15x = 21,326.61 × 8,380.56
  4. Step 4: Simplify right side
    15,454.15x = 178,728,934.70
  5. Step 5: Solve for x
    x = 178,728,934.70/15,454.15
  6. Step 6: Final answer
    x = 11,565.11

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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.