Home / 20,483.97-28,261.76-11,983.83

Finding the Fourth Proportional to 20,483.97, 28,261.76 and 11,983.83

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Solution

The fourth proportional to 20,483.97, 28,261.76 and 11,983.83 is: 16,534.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,483.97 : 28,261.76 = 11,983.83 : x
  2. Step 2: Convert to fraction form
    20,483.97/28,261.76 = 11,983.83/x
  3. Step 3: Cross multiply
    20,483.97x = 28,261.76 × 11,983.83
  4. Step 4: Simplify right side
    20,483.97x = 338,684,067.42
  5. Step 5: Solve for x
    x = 338,684,067.42/20,483.97
  6. Step 6: Final answer
    x = 16,534.10

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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.