Home / 20,306.30-28,023.77-11,353.77

Finding the Fourth Proportional to 20,306.30, 28,023.77 and 11,353.77

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Solution

The fourth proportional to 20,306.30, 28,023.77 and 11,353.77 is: 15,668.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,306.30 : 28,023.77 = 11,353.77 : x
  2. Step 2: Convert to fraction form
    20,306.30/28,023.77 = 11,353.77/x
  3. Step 3: Cross multiply
    20,306.30x = 28,023.77 × 11,353.77
  4. Step 4: Simplify right side
    20,306.30x = 318,175,467.50
  5. Step 5: Solve for x
    x = 318,175,467.50/20,306.30
  6. Step 6: Final answer
    x = 15,668.81

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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.