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Finding the Fourth Proportional to 18,414.60, 27,621.90 and 17,734.20

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Solution

The fourth proportional to 18,414.60, 27,621.90 and 17,734.20 is: 26,601.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,414.60 : 27,621.90 = 17,734.20 : x
  2. Step 2: Convert to fraction form
    18,414.60/27,621.90 = 17,734.20/x
  3. Step 3: Cross multiply
    18,414.60x = 27,621.90 × 17,734.20
  4. Step 4: Simplify right side
    18,414.60x = 489,852,298.98
  5. Step 5: Solve for x
    x = 489,852,298.98/18,414.60
  6. Step 6: Final answer
    x = 26,601.30

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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.