Home / 20,930.44-28,884.02-11,499.61

Finding the Fourth Proportional to 20,930.44, 28,884.02 and 11,499.61

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Solution

The fourth proportional to 20,930.44, 28,884.02 and 11,499.61 is: 15,869.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,930.44 : 28,884.02 = 11,499.61 : x
  2. Step 2: Convert to fraction form
    20,930.44/28,884.02 = 11,499.61/x
  3. Step 3: Cross multiply
    20,930.44x = 28,884.02 × 11,499.61
  4. Step 4: Simplify right side
    20,930.44x = 332,154,965.23
  5. Step 5: Solve for x
    x = 332,154,965.23/20,930.44
  6. Step 6: Final answer
    x = 15,869.47

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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.