Home / 20,711.62-28,575.75-11,758.96

Finding the Fourth Proportional to 20,711.62, 28,575.75 and 11,758.96

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Solution

The fourth proportional to 20,711.62, 28,575.75 and 11,758.96 is: 16,223.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,711.62 : 28,575.75 = 11,758.96 : x
  2. Step 2: Convert to fraction form
    20,711.62/28,575.75 = 11,758.96/x
  3. Step 3: Cross multiply
    20,711.62x = 28,575.75 × 11,758.96
  4. Step 4: Simplify right side
    20,711.62x = 336,021,101.22
  5. Step 5: Solve for x
    x = 336,021,101.22/20,711.62
  6. Step 6: Final answer
    x = 16,223.80

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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.