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Finding the Fourth Proportional to 15,299.80, 22,949.70 and 4,910.20

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Solution

The fourth proportional to 15,299.80, 22,949.70 and 4,910.20 is: 7,365.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,299.80 : 22,949.70 = 4,910.20 : x
  2. Step 2: Convert to fraction form
    15,299.80/22,949.70 = 4,910.20/x
  3. Step 3: Cross multiply
    15,299.80x = 22,949.70 × 4,910.20
  4. Step 4: Simplify right side
    15,299.80x = 112,687,616.94
  5. Step 5: Solve for x
    x = 112,687,616.94/15,299.80
  6. Step 6: Final answer
    x = 7,365.30

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1.5x scale

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.