Home / 20,575.62-28,394.55-11,144.25

Finding the Fourth Proportional to 20,575.62, 28,394.55 and 11,144.25

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Solution

The fourth proportional to 20,575.62, 28,394.55 and 11,144.25 is: 15,379.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,575.62 : 28,394.55 = 11,144.25 : x
  2. Step 2: Convert to fraction form
    20,575.62/28,394.55 = 11,144.25/x
  3. Step 3: Cross multiply
    20,575.62x = 28,394.55 × 11,144.25
  4. Step 4: Simplify right side
    20,575.62x = 316,435,963.84
  5. Step 5: Solve for x
    x = 316,435,963.84/20,575.62
  6. Step 6: Final answer
    x = 15,379.17

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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.