Home / 20,827.38-28,754.94-12,874.12

Finding the Fourth Proportional to 20,827.38, 28,754.94 and 12,874.12

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Solution

The fourth proportional to 20,827.38, 28,754.94 and 12,874.12 is: 17,774.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,827.38 : 28,754.94 = 12,874.12 : x
  2. Step 2: Convert to fraction form
    20,827.38/28,754.94 = 12,874.12/x
  3. Step 3: Cross multiply
    20,827.38x = 28,754.94 × 12,874.12
  4. Step 4: Simplify right side
    20,827.38x = 370,194,548.15
  5. Step 5: Solve for x
    x = 370,194,548.15/20,827.38
  6. Step 6: Final answer
    x = 17,774.42

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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.