Home / 18,118.38-27,151.65-10,311.06

Finding the Fourth Proportional to 18,118.38, 27,151.65 and 10,311.06

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Solution

The fourth proportional to 18,118.38, 27,151.65 and 10,311.06 is: 15,451.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,118.38 : 27,151.65 = 10,311.06 : x
  2. Step 2: Convert to fraction form
    18,118.38/27,151.65 = 10,311.06/x
  3. Step 3: Cross multiply
    18,118.38x = 27,151.65 × 10,311.06
  4. Step 4: Simplify right side
    18,118.38x = 279,962,292.25
  5. Step 5: Solve for x
    x = 279,962,292.25/18,118.38
  6. Step 6: Final answer
    x = 15,451.84

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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.