Home / 20,338.28-28,067.28-14,380.64

Finding the Fourth Proportional to 20,338.28, 28,067.28 and 14,380.64

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Solution

The fourth proportional to 20,338.28, 28,067.28 and 14,380.64 is: 19,845.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,338.28 : 28,067.28 = 14,380.64 : x
  2. Step 2: Convert to fraction form
    20,338.28/28,067.28 = 14,380.64/x
  3. Step 3: Cross multiply
    20,338.28x = 28,067.28 × 14,380.64
  4. Step 4: Simplify right side
    20,338.28x = 403,625,449.46
  5. Step 5: Solve for x
    x = 403,625,449.46/20,338.28
  6. Step 6: Final answer
    x = 19,845.60

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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.