Home / 20,575.97-28,394.84-11,144.53

Finding the Fourth Proportional to 20,575.97, 28,394.84 and 11,144.53

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Solution

The fourth proportional to 20,575.97, 28,394.84 and 11,144.53 is: 15,379.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,575.97 : 28,394.84 = 11,144.53 : x
  2. Step 2: Convert to fraction form
    20,575.97/28,394.84 = 11,144.53/x
  3. Step 3: Cross multiply
    20,575.97x = 28,394.84 × 11,144.53
  4. Step 4: Simplify right side
    20,575.97x = 316,447,209.58
  5. Step 5: Solve for x
    x = 316,447,209.58/20,575.97
  6. Step 6: Final answer
    x = 15,379.46

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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.