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Finding the Fourth Proportional to 18,645.58, 27,958.65 and 6,949.18

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Solution

The fourth proportional to 18,645.58, 27,958.65 and 6,949.18 is: 10,420.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,645.58 : 27,958.65 = 6,949.18 : x
  2. Step 2: Convert to fraction form
    18,645.58/27,958.65 = 6,949.18/x
  3. Step 3: Cross multiply
    18,645.58x = 27,958.65 × 6,949.18
  4. Step 4: Simplify right side
    18,645.58x = 194,289,691.41
  5. Step 5: Solve for x
    x = 194,289,691.41/18,645.58
  6. Step 6: Final answer
    x = 10,420.15

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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.