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Finding the Fourth Proportional to 18,253.78, 27,388.95 and 7,726.66

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Solution

The fourth proportional to 18,253.78, 27,388.95 and 7,726.66 is: 11,593.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,253.78 : 27,388.95 = 7,726.66 : x
  2. Step 2: Convert to fraction form
    18,253.78/27,388.95 = 7,726.66/x
  3. Step 3: Cross multiply
    18,253.78x = 27,388.95 × 7,726.66
  4. Step 4: Simplify right side
    18,253.78x = 211,625,104.41
  5. Step 5: Solve for x
    x = 211,625,104.41/18,253.78
  6. Step 6: Final answer
    x = 11,593.49

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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.