Home / 15,454.39-21,326.87-8,380.73

Finding the Fourth Proportional to 15,454.39, 21,326.87 and 8,380.73

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Solution

The fourth proportional to 15,454.39, 21,326.87 and 8,380.73 is: 11,565.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,454.39 : 21,326.87 = 8,380.73 : x
  2. Step 2: Convert to fraction form
    15,454.39/21,326.87 = 8,380.73/x
  3. Step 3: Cross multiply
    15,454.39x = 21,326.87 × 8,380.73
  4. Step 4: Simplify right side
    15,454.39x = 178,734,590.68
  5. Step 5: Solve for x
    x = 178,734,590.68/15,454.39
  6. Step 6: Final answer
    x = 11,565.30

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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.