Home / 11,872.09-17,812.23-4,478.66

Finding the Fourth Proportional to 11,872.09, 17,812.23 and 4,478.66

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Solution

The fourth proportional to 11,872.09, 17,812.23 and 4,478.66 is: 6,719.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,872.09 : 17,812.23 = 4,478.66 : x
  2. Step 2: Convert to fraction form
    11,872.09/17,812.23 = 4,478.66/x
  3. Step 3: Cross multiply
    11,872.09x = 17,812.23 × 4,478.66
  4. Step 4: Simplify right side
    11,872.09x = 79,774,922.01
  5. Step 5: Solve for x
    x = 79,774,922.01/11,872.09
  6. Step 6: Final answer
    x = 6,719.53

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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.