Home / 15,454.26-21,326.69-8,380.60

Finding the Fourth Proportional to 15,454.26, 21,326.69 and 8,380.60

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Solution

The fourth proportional to 15,454.26, 21,326.69 and 8,380.60 is: 11,565.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,454.26 : 21,326.69 = 8,380.60 : x
  2. Step 2: Convert to fraction form
    15,454.26/21,326.69 = 8,380.60/x
  3. Step 3: Cross multiply
    15,454.26x = 21,326.69 × 8,380.60
  4. Step 4: Simplify right side
    15,454.26x = 178,730,425.85
  5. Step 5: Solve for x
    x = 178,730,425.85/15,454.26
  6. Step 6: Final answer
    x = 11,565.12

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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.