Home / 15,454.22-21,326.78-8,380.62

Finding the Fourth Proportional to 15,454.22, 21,326.78 and 8,380.62

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Solution

The fourth proportional to 15,454.22, 21,326.78 and 8,380.62 is: 11,565.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,454.22 : 21,326.78 = 8,380.62 : x
  2. Step 2: Convert to fraction form
    15,454.22/21,326.78 = 8,380.62/x
  3. Step 3: Cross multiply
    15,454.22x = 21,326.78 × 8,380.62
  4. Step 4: Simplify right side
    15,454.22x = 178,731,639.00
  5. Step 5: Solve for x
    x = 178,731,639.00/15,454.22
  6. Step 6: Final answer
    x = 11,565.23

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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.