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Finding the Fourth Proportional to 15,202.92, 20,980.17 and 8,743.53

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Solution

The fourth proportional to 15,202.92, 20,980.17 and 8,743.53 is: 12,066.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,202.92 : 20,980.17 = 8,743.53 : x
  2. Step 2: Convert to fraction form
    15,202.92/20,980.17 = 8,743.53/x
  3. Step 3: Cross multiply
    15,202.92x = 20,980.17 × 8,743.53
  4. Step 4: Simplify right side
    15,202.92x = 183,440,745.80
  5. Step 5: Solve for x
    x = 183,440,745.80/15,202.92
  6. Step 6: Final answer
    x = 12,066.15

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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.