Home / 11,138.84-15,371.58-6,103.38

Finding the Fourth Proportional to 11,138.84, 15,371.58 and 6,103.38

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Solution

The fourth proportional to 11,138.84, 15,371.58 and 6,103.38 is: 8,422.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,138.84 : 15,371.58 = 6,103.38 : x
  2. Step 2: Convert to fraction form
    11,138.84/15,371.58 = 6,103.38/x
  3. Step 3: Cross multiply
    11,138.84x = 15,371.58 × 6,103.38
  4. Step 4: Simplify right side
    11,138.84x = 93,818,593.94
  5. Step 5: Solve for x
    x = 93,818,593.94/11,138.84
  6. Step 6: Final answer
    x = 8,422.65

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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.