Home / 11,121.36-15,353.06-8,597.78

Finding the Fourth Proportional to 11,121.36, 15,353.06 and 8,597.78

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Solution

The fourth proportional to 11,121.36, 15,353.06 and 8,597.78 is: 11,869.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,121.36 : 15,353.06 = 8,597.78 : x
  2. Step 2: Convert to fraction form
    11,121.36/15,353.06 = 8,597.78/x
  3. Step 3: Cross multiply
    11,121.36x = 15,353.06 × 8,597.78
  4. Step 4: Simplify right side
    11,121.36x = 132,002,232.21
  5. Step 5: Solve for x
    x = 132,002,232.21/11,121.36
  6. Step 6: Final answer
    x = 11,869.25

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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.