Home / 13,842.97-20,763.72-3,981.86

Finding the Fourth Proportional to 13,842.97, 20,763.72 and 3,981.86

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Solution

The fourth proportional to 13,842.97, 20,763.72 and 3,981.86 is: 5,972.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,842.97 : 20,763.72 = 3,981.86 : x
  2. Step 2: Convert to fraction form
    13,842.97/20,763.72 = 3,981.86/x
  3. Step 3: Cross multiply
    13,842.97x = 20,763.72 × 3,981.86
  4. Step 4: Simplify right side
    13,842.97x = 82,678,215.10
  5. Step 5: Solve for x
    x = 82,678,215.10/13,842.97
  6. Step 6: Final answer
    x = 5,972.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.