Home / 15,180.78-20,948.49-8,466.03

Finding the Fourth Proportional to 15,180.78, 20,948.49 and 8,466.03

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Solution

The fourth proportional to 15,180.78, 20,948.49 and 8,466.03 is: 11,682.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,180.78 : 20,948.49 = 8,466.03 : x
  2. Step 2: Convert to fraction form
    15,180.78/20,948.49 = 8,466.03/x
  3. Step 3: Cross multiply
    15,180.78x = 20,948.49 × 8,466.03
  4. Step 4: Simplify right side
    15,180.78x = 177,350,544.79
  5. Step 5: Solve for x
    x = 177,350,544.79/15,180.78
  6. Step 6: Final answer
    x = 11,682.57

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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.