Home / 11,139.11-15,372.05-6,103.79

Finding the Fourth Proportional to 11,139.11, 15,372.05 and 6,103.79

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Solution

The fourth proportional to 11,139.11, 15,372.05 and 6,103.79 is: 8,423.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,139.11 : 15,372.05 = 6,103.79 : x
  2. Step 2: Convert to fraction form
    11,139.11/15,372.05 = 6,103.79/x
  3. Step 3: Cross multiply
    11,139.11x = 15,372.05 × 6,103.79
  4. Step 4: Simplify right side
    11,139.11x = 93,827,734.55
  5. Step 5: Solve for x
    x = 93,827,734.55/11,139.11
  6. Step 6: Final answer
    x = 8,423.27

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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.