Home / 20,850.42-28,774.11-11,418.96

Finding the Fourth Proportional to 20,850.42, 28,774.11 and 11,418.96

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Solution

The fourth proportional to 20,850.42, 28,774.11 and 11,418.96 is: 15,758.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,850.42 : 28,774.11 = 11,418.96 : x
  2. Step 2: Convert to fraction form
    20,850.42/28,774.11 = 11,418.96/x
  3. Step 3: Cross multiply
    20,850.42x = 28,774.11 × 11,418.96
  4. Step 4: Simplify right side
    20,850.42x = 328,570,411.13
  5. Step 5: Solve for x
    x = 328,570,411.13/20,850.42
  6. Step 6: Final answer
    x = 15,758.46

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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.