Home / 20,770.10-28,663.22-11,338.73

Finding the Fourth Proportional to 20,770.10, 28,663.22 and 11,338.73

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Solution

The fourth proportional to 20,770.10, 28,663.22 and 11,338.73 is: 15,647.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,770.10 : 28,663.22 = 11,338.73 : x
  2. Step 2: Convert to fraction form
    20,770.10/28,663.22 = 11,338.73/x
  3. Step 3: Cross multiply
    20,770.10x = 28,663.22 × 11,338.73
  4. Step 4: Simplify right side
    20,770.10x = 325,004,512.51
  5. Step 5: Solve for x
    x = 325,004,512.51/20,770.10
  6. Step 6: Final answer
    x = 15,647.71

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Double scale
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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.