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Finding the Fourth Proportional to 18,137.97, 27,153.50 and 17,690.85

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Solution

The fourth proportional to 18,137.97, 27,153.50 and 17,690.85 is: 26,484.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,137.97 : 27,153.50 = 17,690.85 : x
  2. Step 2: Convert to fraction form
    18,137.97/27,153.50 = 17,690.85/x
  3. Step 3: Cross multiply
    18,137.97x = 27,153.50 × 17,690.85
  4. Step 4: Simplify right side
    18,137.97x = 480,368,407.02
  5. Step 5: Solve for x
    x = 480,368,407.02/18,137.97
  6. Step 6: Final answer
    x = 26,484.13

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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.