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Finding the Fourth Proportional to 18,156.51, 27,211.22 and 8,153.87

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Solution

The fourth proportional to 18,156.51, 27,211.22 and 8,153.87 is: 12,220.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,156.51 : 27,211.22 = 8,153.87 : x
  2. Step 2: Convert to fraction form
    18,156.51/27,211.22 = 8,153.87/x
  3. Step 3: Cross multiply
    18,156.51x = 27,211.22 × 8,153.87
  4. Step 4: Simplify right side
    18,156.51x = 221,876,750.42
  5. Step 5: Solve for x
    x = 221,876,750.42/18,156.51
  6. Step 6: Final answer
    x = 12,220.23

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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.