Home / 15,454.17-21,326.79-8,380.62

Finding the Fourth Proportional to 15,454.17, 21,326.79 and 8,380.62

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Solution

The fourth proportional to 15,454.17, 21,326.79 and 8,380.62 is: 11,565.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,454.17 : 21,326.79 = 8,380.62 : x
  2. Step 2: Convert to fraction form
    15,454.17/21,326.79 = 8,380.62/x
  3. Step 3: Cross multiply
    15,454.17x = 21,326.79 × 8,380.62
  4. Step 4: Simplify right side
    15,454.17x = 178,731,722.81
  5. Step 5: Solve for x
    x = 178,731,722.81/15,454.17
  6. Step 6: Final answer
    x = 11,565.27

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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.