Home / 11,121.66-15,266.13-9,834.51

Finding the Fourth Proportional to 11,121.66, 15,266.13 and 9,834.51

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Solution

The fourth proportional to 11,121.66, 15,266.13 and 9,834.51 is: 13,499.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,121.66 : 15,266.13 = 9,834.51 : x
  2. Step 2: Convert to fraction form
    11,121.66/15,266.13 = 9,834.51/x
  3. Step 3: Cross multiply
    11,121.66x = 15,266.13 × 9,834.51
  4. Step 4: Simplify right side
    11,121.66x = 150,134,908.15
  5. Step 5: Solve for x
    x = 150,134,908.15/11,121.66
  6. Step 6: Final answer
    x = 13,499.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.