Home / 20,758.85-28,613.07-14,711.12

Finding the Fourth Proportional to 20,758.85, 28,613.07 and 14,711.12

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Solution

The fourth proportional to 20,758.85, 28,613.07 and 14,711.12 is: 20,277.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,758.85 : 28,613.07 = 14,711.12 : x
  2. Step 2: Convert to fraction form
    20,758.85/28,613.07 = 14,711.12/x
  3. Step 3: Cross multiply
    20,758.85x = 28,613.07 × 14,711.12
  4. Step 4: Simplify right side
    20,758.85x = 420,930,306.34
  5. Step 5: Solve for x
    x = 420,930,306.34/20,758.85
  6. Step 6: Final answer
    x = 20,277.15

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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.