Home / 10,120.42-15,171.37-3,543.02

Finding the Fourth Proportional to 10,120.42, 15,171.37 and 3,543.02

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Solution

The fourth proportional to 10,120.42, 15,171.37 and 3,543.02 is: 5,311.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,120.42 : 15,171.37 = 3,543.02 : x
  2. Step 2: Convert to fraction form
    10,120.42/15,171.37 = 3,543.02/x
  3. Step 3: Cross multiply
    10,120.42x = 15,171.37 × 3,543.02
  4. Step 4: Simplify right side
    10,120.42x = 53,752,382.62
  5. Step 5: Solve for x
    x = 53,752,382.62/10,120.42
  6. Step 6: Final answer
    x = 5,311.28

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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.