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Finding the Fourth Proportional to 18,297.20, 25,250.22 and 9,913.70

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Solution

The fourth proportional to 18,297.20, 25,250.22 and 9,913.70 is: 13,680.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,297.20 : 25,250.22 = 9,913.70 : x
  2. Step 2: Convert to fraction form
    18,297.20/25,250.22 = 9,913.70/x
  3. Step 3: Cross multiply
    18,297.20x = 25,250.22 × 9,913.70
  4. Step 4: Simplify right side
    18,297.20x = 250,322,979.76
  5. Step 5: Solve for x
    x = 250,322,979.76/18,297.20
  6. Step 6: Final answer
    x = 13,680.95

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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.