Home / 11,139.10-15,371.79-6,103.30

Finding the Fourth Proportional to 11,139.10, 15,371.79 and 6,103.30

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Solution

The fourth proportional to 11,139.10, 15,371.79 and 6,103.30 is: 8,422.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,139.10 : 15,371.79 = 6,103.30 : x
  2. Step 2: Convert to fraction form
    11,139.10/15,371.79 = 6,103.30/x
  3. Step 3: Cross multiply
    11,139.10x = 15,371.79 × 6,103.30
  4. Step 4: Simplify right side
    11,139.10x = 93,818,645.91
  5. Step 5: Solve for x
    x = 93,818,645.91/11,139.10
  6. Step 6: Final answer
    x = 8,422.46

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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.