Home / 20,930.06-28,884.04-11,498.88

Finding the Fourth Proportional to 20,930.06, 28,884.04 and 11,498.88

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Solution

The fourth proportional to 20,930.06, 28,884.04 and 11,498.88 is: 15,868.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,930.06 : 28,884.04 = 11,498.88 : x
  2. Step 2: Convert to fraction form
    20,930.06/28,884.04 = 11,498.88/x
  3. Step 3: Cross multiply
    20,930.06x = 28,884.04 × 11,498.88
  4. Step 4: Simplify right side
    20,930.06x = 332,134,109.88
  5. Step 5: Solve for x
    x = 332,134,109.88/20,930.06
  6. Step 6: Final answer
    x = 15,868.76

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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.