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Finding the Fourth Proportional to 19,791.78, 27,311.49 and 10,837.50

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Solution

The fourth proportional to 19,791.78, 27,311.49 and 10,837.50 is: 14,955.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,791.78 : 27,311.49 = 10,837.50 : x
  2. Step 2: Convert to fraction form
    19,791.78/27,311.49 = 10,837.50/x
  3. Step 3: Cross multiply
    19,791.78x = 27,311.49 × 10,837.50
  4. Step 4: Simplify right side
    19,791.78x = 295,988,272.88
  5. Step 5: Solve for x
    x = 295,988,272.88/19,791.78
  6. Step 6: Final answer
    x = 14,955.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.