Home / 20,338.76-28,067.21-11,386.26

Finding the Fourth Proportional to 20,338.76, 28,067.21 and 11,386.26

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Solution

The fourth proportional to 20,338.76, 28,067.21 and 11,386.26 is: 15,712.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,338.76 : 28,067.21 = 11,386.26 : x
  2. Step 2: Convert to fraction form
    20,338.76/28,067.21 = 11,386.26/x
  3. Step 3: Cross multiply
    20,338.76x = 28,067.21 × 11,386.26
  4. Step 4: Simplify right side
    20,338.76x = 319,580,493.60
  5. Step 5: Solve for x
    x = 319,580,493.60/20,338.76
  6. Step 6: Final answer
    x = 15,712.88

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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.