Home / 11,121.68-16,684.54-5,278.23

Finding the Fourth Proportional to 11,121.68, 16,684.54 and 5,278.23

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Solution

The fourth proportional to 11,121.68, 16,684.54 and 5,278.23 is: 7,918.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,121.68 : 16,684.54 = 5,278.23 : x
  2. Step 2: Convert to fraction form
    11,121.68/16,684.54 = 5,278.23/x
  3. Step 3: Cross multiply
    11,121.68x = 16,684.54 × 5,278.23
  4. Step 4: Simplify right side
    11,121.68x = 88,064,839.56
  5. Step 5: Solve for x
    x = 88,064,839.56/11,121.68
  6. Step 6: Final answer
    x = 7,918.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.