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Finding the Fourth Proportional to 18,405.60, 27,604.08 and 6,712.44

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Solution

The fourth proportional to 18,405.60, 27,604.08 and 6,712.44 is: 10,067.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,405.60 : 27,604.08 = 6,712.44 : x
  2. Step 2: Convert to fraction form
    18,405.60/27,604.08 = 6,712.44/x
  3. Step 3: Cross multiply
    18,405.60x = 27,604.08 × 6,712.44
  4. Step 4: Simplify right side
    18,405.60x = 185,290,730.76
  5. Step 5: Solve for x
    x = 185,290,730.76/18,405.60
  6. Step 6: Final answer
    x = 10,067.08

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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.