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Finding the Fourth Proportional to 18,591.98, 27,864.28 and 8,709.47

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Solution

The fourth proportional to 18,591.98, 27,864.28 and 8,709.47 is: 13,053.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,591.98 : 27,864.28 = 8,709.47 : x
  2. Step 2: Convert to fraction form
    18,591.98/27,864.28 = 8,709.47/x
  3. Step 3: Cross multiply
    18,591.98x = 27,864.28 × 8,709.47
  4. Step 4: Simplify right side
    18,591.98x = 242,683,219.03
  5. Step 5: Solve for x
    x = 242,683,219.03/18,591.98
  6. Step 6: Final answer
    x = 13,053.11

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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.