Home / 20,306.52-28,021.20-11,352.84

Finding the Fourth Proportional to 20,306.52, 28,021.20 and 11,352.84

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Solution

The fourth proportional to 20,306.52, 28,021.20 and 11,352.84 is: 15,665.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,306.52 : 28,021.20 = 11,352.84 : x
  2. Step 2: Convert to fraction form
    20,306.52/28,021.20 = 11,352.84/x
  3. Step 3: Cross multiply
    20,306.52x = 28,021.20 × 11,352.84
  4. Step 4: Simplify right side
    20,306.52x = 318,120,200.21
  5. Step 5: Solve for x
    x = 318,120,200.21/20,306.52
  6. Step 6: Final answer
    x = 15,665.91

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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.