Home / 11,139.05-15,371.84-6,103.42

Finding the Fourth Proportional to 11,139.05, 15,371.84 and 6,103.42

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Solution

The fourth proportional to 11,139.05, 15,371.84 and 6,103.42 is: 8,422.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,139.05 : 15,371.84 = 6,103.42 : x
  2. Step 2: Convert to fraction form
    11,139.05/15,371.84 = 6,103.42/x
  3. Step 3: Cross multiply
    11,139.05x = 15,371.84 × 6,103.42
  4. Step 4: Simplify right side
    11,139.05x = 93,820,772.52
  5. Step 5: Solve for x
    x = 93,820,772.52/11,139.05
  6. Step 6: Final answer
    x = 8,422.69

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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.