Home / 20,930.83-28,884.54-11,499.39

Finding the Fourth Proportional to 20,930.83, 28,884.54 and 11,499.39

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Solution

The fourth proportional to 20,930.83, 28,884.54 and 11,499.39 is: 15,869.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,930.83 : 28,884.54 = 11,499.39 : x
  2. Step 2: Convert to fraction form
    20,930.83/28,884.54 = 11,499.39/x
  3. Step 3: Cross multiply
    20,930.83x = 28,884.54 × 11,499.39
  4. Step 4: Simplify right side
    20,930.83x = 332,154,590.43
  5. Step 5: Solve for x
    x = 332,154,590.43/20,930.83
  6. Step 6: Final answer
    x = 15,869.16

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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.