Home / 20,842.53-28,776.11-18,600.56

Finding the Fourth Proportional to 20,842.53, 28,776.11 and 18,600.56

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Solution

The fourth proportional to 20,842.53, 28,776.11 and 18,600.56 is: 25,680.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,842.53 : 28,776.11 = 18,600.56 : x
  2. Step 2: Convert to fraction form
    20,842.53/28,776.11 = 18,600.56/x
  3. Step 3: Cross multiply
    20,842.53x = 28,776.11 × 18,600.56
  4. Step 4: Simplify right side
    20,842.53x = 535,251,760.62
  5. Step 5: Solve for x
    x = 535,251,760.62/20,842.53
  6. Step 6: Final answer
    x = 25,680.75

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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.