Home / 11,139.07-15,371.71-6,604.80

Finding the Fourth Proportional to 11,139.07, 15,371.71 and 6,604.80

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Solution

The fourth proportional to 11,139.07, 15,371.71 and 6,604.80 is: 9,114.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,139.07 : 15,371.71 = 6,604.80 : x
  2. Step 2: Convert to fraction form
    11,139.07/15,371.71 = 6,604.80/x
  3. Step 3: Cross multiply
    11,139.07x = 15,371.71 × 6,604.80
  4. Step 4: Simplify right side
    11,139.07x = 101,527,067.15
  5. Step 5: Solve for x
    x = 101,527,067.15/11,139.07
  6. Step 6: Final answer
    x = 9,114.51

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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.