Home / 20,278.87-27,984.97-11,326.44

Finding the Fourth Proportional to 20,278.87, 27,984.97 and 11,326.44

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Solution

The fourth proportional to 20,278.87, 27,984.97 and 11,326.44 is: 15,630.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,278.87 : 27,984.97 = 11,326.44 : x
  2. Step 2: Convert to fraction form
    20,278.87/27,984.97 = 11,326.44/x
  3. Step 3: Cross multiply
    20,278.87x = 27,984.97 × 11,326.44
  4. Step 4: Simplify right side
    20,278.87x = 316,970,068.95
  5. Step 5: Solve for x
    x = 316,970,068.95/20,278.87
  6. Step 6: Final answer
    x = 15,630.56

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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.