Home / 18,122.60-27,161.60-8,639.92

Finding the Fourth Proportional to 18,122.60, 27,161.60 and 8,639.92

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Solution

The fourth proportional to 18,122.60, 27,161.60 and 8,639.92 is: 12,949.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,122.60 : 27,161.60 = 8,639.92 : x
  2. Step 2: Convert to fraction form
    18,122.60/27,161.60 = 8,639.92/x
  3. Step 3: Cross multiply
    18,122.60x = 27,161.60 × 8,639.92
  4. Step 4: Simplify right side
    18,122.60x = 234,673,889.04
  5. Step 5: Solve for x
    x = 234,673,889.04/18,122.60
  6. Step 6: Final answer
    x = 12,949.24

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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.