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Finding the Fourth Proportional to 15,168.40, 20,945.30 and 9,512.62

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Solution

The fourth proportional to 15,168.40, 20,945.30 and 9,512.62 is: 13,135.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,168.40 : 20,945.30 = 9,512.62 : x
  2. Step 2: Convert to fraction form
    15,168.40/20,945.30 = 9,512.62/x
  3. Step 3: Cross multiply
    15,168.40x = 20,945.30 × 9,512.62
  4. Step 4: Simplify right side
    15,168.40x = 199,244,679.69
  5. Step 5: Solve for x
    x = 199,244,679.69/15,168.40
  6. Step 6: Final answer
    x = 13,135.51

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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.