Home / 11,984.80-17,974.32-6,138.40

Finding the Fourth Proportional to 11,984.80, 17,974.32 and 6,138.40

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Solution

The fourth proportional to 11,984.80, 17,974.32 and 6,138.40 is: 9,206.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,984.80 : 17,974.32 = 6,138.40 : x
  2. Step 2: Convert to fraction form
    11,984.80/17,974.32 = 6,138.40/x
  3. Step 3: Cross multiply
    11,984.80x = 17,974.32 × 6,138.40
  4. Step 4: Simplify right side
    11,984.80x = 110,333,565.89
  5. Step 5: Solve for x
    x = 110,333,565.89/11,984.80
  6. Step 6: Final answer
    x = 9,206.12

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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.