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Finding the Fourth Proportional to 18,061.78, 27,100.28 and 9,731.98

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Solution

The fourth proportional to 18,061.78, 27,100.28 and 9,731.98 is: 14,602.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,061.78 : 27,100.28 = 9,731.98 : x
  2. Step 2: Convert to fraction form
    18,061.78/27,100.28 = 9,731.98/x
  3. Step 3: Cross multiply
    18,061.78x = 27,100.28 × 9,731.98
  4. Step 4: Simplify right side
    18,061.78x = 263,739,382.95
  5. Step 5: Solve for x
    x = 263,739,382.95/18,061.78
  6. Step 6: Final answer
    x = 14,602.07

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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.