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Finding the Fourth Proportional to 18,800.28, 25,949.52 and 11,722.50

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Solution

The fourth proportional to 18,800.28, 25,949.52 and 11,722.50 is: 16,180.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,800.28 : 25,949.52 = 11,722.50 : x
  2. Step 2: Convert to fraction form
    18,800.28/25,949.52 = 11,722.50/x
  3. Step 3: Cross multiply
    18,800.28x = 25,949.52 × 11,722.50
  4. Step 4: Simplify right side
    18,800.28x = 304,193,248.20
  5. Step 5: Solve for x
    x = 304,193,248.20/18,800.28
  6. Step 6: Final answer
    x = 16,180.25

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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.