Home / 12,981.50-19,474.68-4,214.06

Finding the Fourth Proportional to 12,981.50, 19,474.68 and 4,214.06

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Solution

The fourth proportional to 12,981.50, 19,474.68 and 4,214.06 is: 6,321.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,981.50 : 19,474.68 = 4,214.06 : x
  2. Step 2: Convert to fraction form
    12,981.50/19,474.68 = 4,214.06/x
  3. Step 3: Cross multiply
    12,981.50x = 19,474.68 × 4,214.06
  4. Step 4: Simplify right side
    12,981.50x = 82,067,470.00
  5. Step 5: Solve for x
    x = 82,067,470.00/12,981.50
  6. Step 6: Final answer
    x = 6,321.88

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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.