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Finding the Fourth Proportional to 18,113.60, 27,109.92 and 10,320.32

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Solution

The fourth proportional to 18,113.60, 27,109.92 and 10,320.32 is: 15,446.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,113.60 : 27,109.92 = 10,320.32 : x
  2. Step 2: Convert to fraction form
    18,113.60/27,109.92 = 10,320.32/x
  3. Step 3: Cross multiply
    18,113.60x = 27,109.92 × 10,320.32
  4. Step 4: Simplify right side
    18,113.60x = 279,783,049.57
  5. Step 5: Solve for x
    x = 279,783,049.57/18,113.60
  6. Step 6: Final answer
    x = 15,446.02

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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.