Home / 15,112.44-20,855.18-8,397.90

Finding the Fourth Proportional to 15,112.44, 20,855.18 and 8,397.90

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Solution

The fourth proportional to 15,112.44, 20,855.18 and 8,397.90 is: 11,589.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,112.44 : 20,855.18 = 8,397.90 : x
  2. Step 2: Convert to fraction form
    15,112.44/20,855.18 = 8,397.90/x
  3. Step 3: Cross multiply
    15,112.44x = 20,855.18 × 8,397.90
  4. Step 4: Simplify right side
    15,112.44x = 175,139,737.12
  5. Step 5: Solve for x
    x = 175,139,737.12/15,112.44
  6. Step 6: Final answer
    x = 11,589.11

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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.