Home / 18,122.81-27,183.38-5,642.55

Finding the Fourth Proportional to 18,122.81, 27,183.38 and 5,642.55

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Solution

The fourth proportional to 18,122.81, 27,183.38 and 5,642.55 is: 8,463.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,122.81 : 27,183.38 = 5,642.55 : x
  2. Step 2: Convert to fraction form
    18,122.81/27,183.38 = 5,642.55/x
  3. Step 3: Cross multiply
    18,122.81x = 27,183.38 × 5,642.55
  4. Step 4: Simplify right side
    18,122.81x = 153,383,552.61
  5. Step 5: Solve for x
    x = 153,383,552.61/18,122.81
  6. Step 6: Final answer
    x = 8,463.57

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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.