Home / 18,119.60-27,157.10-8,636.91

Finding the Fourth Proportional to 18,119.60, 27,157.10 and 8,636.91

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Solution

The fourth proportional to 18,119.60, 27,157.10 and 8,636.91 is: 12,944.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,119.60 : 27,157.10 = 8,636.91 : x
  2. Step 2: Convert to fraction form
    18,119.60/27,157.10 = 8,636.91/x
  3. Step 3: Cross multiply
    18,119.60x = 27,157.10 × 8,636.91
  4. Step 4: Simplify right side
    18,119.60x = 234,553,283.54
  5. Step 5: Solve for x
    x = 234,553,283.54/18,119.60
  6. Step 6: Final answer
    x = 12,944.73

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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.