Home / 18,538.11-27,794.87-12,998.17

Finding the Fourth Proportional to 18,538.11, 27,794.87 and 12,998.17

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Solution

The fourth proportional to 18,538.11, 27,794.87 and 12,998.17 is: 19,488.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,538.11 : 27,794.87 = 12,998.17 : x
  2. Step 2: Convert to fraction form
    18,538.11/27,794.87 = 12,998.17/x
  3. Step 3: Cross multiply
    18,538.11x = 27,794.87 × 12,998.17
  4. Step 4: Simplify right side
    18,538.11x = 361,282,395.52
  5. Step 5: Solve for x
    x = 361,282,395.52/18,538.11
  6. Step 6: Final answer
    x = 19,488.63

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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.