Home / 11,139.91-15,372.41-6,103.13

Finding the Fourth Proportional to 11,139.91, 15,372.41 and 6,103.13

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Solution

The fourth proportional to 11,139.91, 15,372.41 and 6,103.13 is: 8,421.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,139.91 : 15,372.41 = 6,103.13 : x
  2. Step 2: Convert to fraction form
    11,139.91/15,372.41 = 6,103.13/x
  3. Step 3: Cross multiply
    11,139.91x = 15,372.41 × 6,103.13
  4. Step 4: Simplify right side
    11,139.91x = 93,819,709.27
  5. Step 5: Solve for x
    x = 93,819,709.27/11,139.91
  6. Step 6: Final answer
    x = 8,421.95

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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.