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Finding the Fourth Proportional to 19,843.68, 27,385.08 and 10,891.50

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Solution

The fourth proportional to 19,843.68, 27,385.08 and 10,891.50 is: 15,030.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,843.68 : 27,385.08 = 10,891.50 : x
  2. Step 2: Convert to fraction form
    19,843.68/27,385.08 = 10,891.50/x
  3. Step 3: Cross multiply
    19,843.68x = 27,385.08 × 10,891.50
  4. Step 4: Simplify right side
    19,843.68x = 298,264,598.82
  5. Step 5: Solve for x
    x = 298,264,598.82/19,843.68
  6. Step 6: Final answer
    x = 15,030.71

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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.