Home / 20,418.68-28,178.46-11,466.96

Finding the Fourth Proportional to 20,418.68, 28,178.46 and 11,466.96

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Solution

The fourth proportional to 20,418.68, 28,178.46 and 11,466.96 is: 15,824.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,418.68 : 28,178.46 = 11,466.96 : x
  2. Step 2: Convert to fraction form
    20,418.68/28,178.46 = 11,466.96/x
  3. Step 3: Cross multiply
    20,418.68x = 28,178.46 × 11,466.96
  4. Step 4: Simplify right side
    20,418.68x = 323,121,273.68
  5. Step 5: Solve for x
    x = 323,121,273.68/20,418.68
  6. Step 6: Final answer
    x = 15,824.79

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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.