Home / 11,138.61-15,371.24-6,103.15

Finding the Fourth Proportional to 11,138.61, 15,371.24 and 6,103.15

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Solution

The fourth proportional to 11,138.61, 15,371.24 and 6,103.15 is: 8,422.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,138.61 : 15,371.24 = 6,103.15 : x
  2. Step 2: Convert to fraction form
    11,138.61/15,371.24 = 6,103.15/x
  3. Step 3: Cross multiply
    11,138.61x = 15,371.24 × 6,103.15
  4. Step 4: Simplify right side
    11,138.61x = 93,812,983.41
  5. Step 5: Solve for x
    x = 93,812,983.41/11,138.61
  6. Step 6: Final answer
    x = 8,422.32

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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.