Home / 15,168.70-20,930.43-8,452.18

Finding the Fourth Proportional to 15,168.70, 20,930.43 and 8,452.18

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Solution

The fourth proportional to 15,168.70, 20,930.43 and 8,452.18 is: 11,662.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,168.70 : 20,930.43 = 8,452.18 : x
  2. Step 2: Convert to fraction form
    15,168.70/20,930.43 = 8,452.18/x
  3. Step 3: Cross multiply
    15,168.70x = 20,930.43 × 8,452.18
  4. Step 4: Simplify right side
    15,168.70x = 176,907,761.84
  5. Step 5: Solve for x
    x = 176,907,761.84/15,168.70
  6. Step 6: Final answer
    x = 11,662.68

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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.