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Finding the Fourth Proportional to 18,838.17, 28,201.77 and 11,795.22

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Solution

The fourth proportional to 18,838.17, 28,201.77 and 11,795.22 is: 17,658.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,838.17 : 28,201.77 = 11,795.22 : x
  2. Step 2: Convert to fraction form
    18,838.17/28,201.77 = 11,795.22/x
  3. Step 3: Cross multiply
    18,838.17x = 28,201.77 × 11,795.22
  4. Step 4: Simplify right side
    18,838.17x = 332,646,081.54
  5. Step 5: Solve for x
    x = 332,646,081.54/18,838.17
  6. Step 6: Final answer
    x = 17,658.09

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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.