Home / 20,630.06-28,469.49-11,198.62

Finding the Fourth Proportional to 20,630.06, 28,469.49 and 11,198.62

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Solution

The fourth proportional to 20,630.06, 28,469.49 and 11,198.62 is: 15,454.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,630.06 : 28,469.49 = 11,198.62 : x
  2. Step 2: Convert to fraction form
    20,630.06/28,469.49 = 11,198.62/x
  3. Step 3: Cross multiply
    20,630.06x = 28,469.49 × 11,198.62
  4. Step 4: Simplify right side
    20,630.06x = 318,818,857.76
  5. Step 5: Solve for x
    x = 318,818,857.76/20,630.06
  6. Step 6: Final answer
    x = 15,454.10

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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.