Home / 13,620.25-20,432.66-4,261.18

Finding the Fourth Proportional to 13,620.25, 20,432.66 and 4,261.18

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Solution

The fourth proportional to 13,620.25, 20,432.66 and 4,261.18 is: 6,392.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,620.25 : 20,432.66 = 4,261.18 : x
  2. Step 2: Convert to fraction form
    13,620.25/20,432.66 = 4,261.18/x
  3. Step 3: Cross multiply
    13,620.25x = 20,432.66 × 4,261.18
  4. Step 4: Simplify right side
    13,620.25x = 87,067,265.53
  5. Step 5: Solve for x
    x = 87,067,265.53/13,620.25
  6. Step 6: Final answer
    x = 6,392.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.