Home / 15,112.25-20,854.88-8,398.53

Finding the Fourth Proportional to 15,112.25, 20,854.88 and 8,398.53

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Solution

The fourth proportional to 15,112.25, 20,854.88 and 8,398.53 is: 11,589.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,112.25 : 20,854.88 = 8,398.53 : x
  2. Step 2: Convert to fraction form
    15,112.25/20,854.88 = 8,398.53/x
  3. Step 3: Cross multiply
    15,112.25x = 20,854.88 × 8,398.53
  4. Step 4: Simplify right side
    15,112.25x = 175,150,324.83
  5. Step 5: Solve for x
    x = 175,150,324.83/15,112.25
  6. Step 6: Final answer
    x = 11,589.96

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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.