Home / 22,215.20-30,657.80-12,144.31

Finding the Fourth Proportional to 22,215.20, 30,657.80 and 12,144.31

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Solution

The fourth proportional to 22,215.20, 30,657.80 and 12,144.31 is: 16,759.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,215.20 : 30,657.80 = 12,144.31 : x
  2. Step 2: Convert to fraction form
    22,215.20/30,657.80 = 12,144.31/x
  3. Step 3: Cross multiply
    22,215.20x = 30,657.80 × 12,144.31
  4. Step 4: Simplify right side
    22,215.20x = 372,317,827.12
  5. Step 5: Solve for x
    x = 372,317,827.12/22,215.20
  6. Step 6: Final answer
    x = 16,759.60

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Similar ratio
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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.