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Finding the Fourth Proportional to 18,648, 27,949.20 and 8,774.16

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Solution

The fourth proportional to 18,648, 27,949.20 and 8,774.16 is: 13,150.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,648 : 27,949.20 = 8,774.16 : x
  2. Step 2: Convert to fraction form
    18,648/27,949.20 = 8,774.16/x
  3. Step 3: Cross multiply
    18,648x = 27,949.20 × 8,774.16
  4. Step 4: Simplify right side
    18,648x = 245,230,752.67
  5. Step 5: Solve for x
    x = 245,230,752.67/18,648
  6. Step 6: Final answer
    x = 13,150.51

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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.