Home / 11,961.79-17,931.11-6,699.35

Finding the Fourth Proportional to 11,961.79, 17,931.11 and 6,699.35

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Solution

The fourth proportional to 11,961.79, 17,931.11 and 6,699.35 is: 10,042.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,961.79 : 17,931.11 = 6,699.35 : x
  2. Step 2: Convert to fraction form
    11,961.79/17,931.11 = 6,699.35/x
  3. Step 3: Cross multiply
    11,961.79x = 17,931.11 × 6,699.35
  4. Step 4: Simplify right side
    11,961.79x = 120,126,793.11
  5. Step 5: Solve for x
    x = 120,126,793.11/11,961.79
  6. Step 6: Final answer
    x = 10,042.55

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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.