Home / 20,850.25-28,773.36-11,418.85

Finding the Fourth Proportional to 20,850.25, 28,773.36 and 11,418.85

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Solution

The fourth proportional to 20,850.25, 28,773.36 and 11,418.85 is: 15,758.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,850.25 : 28,773.36 = 11,418.85 : x
  2. Step 2: Convert to fraction form
    20,850.25/28,773.36 = 11,418.85/x
  3. Step 3: Cross multiply
    20,850.25x = 28,773.36 × 11,418.85
  4. Step 4: Simplify right side
    20,850.25x = 328,558,681.84
  5. Step 5: Solve for x
    x = 328,558,681.84/20,850.25
  6. Step 6: Final answer
    x = 15,758.02

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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.