Home / 20,290.44-28,001.34-11,338.92

Finding the Fourth Proportional to 20,290.44, 28,001.34 and 11,338.92

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Solution

The fourth proportional to 20,290.44, 28,001.34 and 11,338.92 is: 15,648.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,290.44 : 28,001.34 = 11,338.92 : x
  2. Step 2: Convert to fraction form
    20,290.44/28,001.34 = 11,338.92/x
  3. Step 3: Cross multiply
    20,290.44x = 28,001.34 × 11,338.92
  4. Step 4: Simplify right side
    20,290.44x = 317,504,954.15
  5. Step 5: Solve for x
    x = 317,504,954.15/20,290.44
  6. Step 6: Final answer
    x = 15,648.01

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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.