Home / 15,454.48-21,327.36-8,380.96

Finding the Fourth Proportional to 15,454.48, 21,327.36 and 8,380.96

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Solution

The fourth proportional to 15,454.48, 21,327.36 and 8,380.96 is: 11,565.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,454.48 : 21,327.36 = 8,380.96 : x
  2. Step 2: Convert to fraction form
    15,454.48/21,327.36 = 8,380.96/x
  3. Step 3: Cross multiply
    15,454.48x = 21,327.36 × 8,380.96
  4. Step 4: Simplify right side
    15,454.48x = 178,743,751.07
  5. Step 5: Solve for x
    x = 178,743,751.07/15,454.48
  6. Step 6: Final answer
    x = 11,565.82

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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.