Home / 11,139.20-15,372.08-6,103.73

Finding the Fourth Proportional to 11,139.20, 15,372.08 and 6,103.73

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Solution

The fourth proportional to 11,139.20, 15,372.08 and 6,103.73 is: 8,423.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,139.20 : 15,372.08 = 6,103.73 : x
  2. Step 2: Convert to fraction form
    11,139.20/15,372.08 = 6,103.73/x
  3. Step 3: Cross multiply
    11,139.20x = 15,372.08 × 6,103.73
  4. Step 4: Simplify right side
    11,139.20x = 93,826,995.34
  5. Step 5: Solve for x
    x = 93,826,995.34/11,139.20
  6. Step 6: Final answer
    x = 8,423.14

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1.5x scale

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.