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Finding the Fourth Proportional to 18,154.51, 27,208.22 and 8,151.87

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Solution

The fourth proportional to 18,154.51, 27,208.22 and 8,151.87 is: 12,217.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,154.51 : 27,208.22 = 8,151.87 : x
  2. Step 2: Convert to fraction form
    18,154.51/27,208.22 = 8,151.87/x
  3. Step 3: Cross multiply
    18,154.51x = 27,208.22 × 8,151.87
  4. Step 4: Simplify right side
    18,154.51x = 221,797,872.37
  5. Step 5: Solve for x
    x = 221,797,872.37/18,154.51
  6. Step 6: Final answer
    x = 12,217.23

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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.