Home / 20,517.76-30,748.56-11,145.52

Finding the Fourth Proportional to 20,517.76, 30,748.56 and 11,145.52

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Solution

The fourth proportional to 20,517.76, 30,748.56 and 11,145.52 is: 16,703.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,517.76 : 30,748.56 = 11,145.52 : x
  2. Step 2: Convert to fraction form
    20,517.76/30,748.56 = 11,145.52/x
  3. Step 3: Cross multiply
    20,517.76x = 30,748.56 × 11,145.52
  4. Step 4: Simplify right side
    20,517.76x = 342,708,690.45
  5. Step 5: Solve for x
    x = 342,708,690.45/20,517.76
  6. Step 6: Final answer
    x = 16,703.03

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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.