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Finding the Fourth Proportional to 18,399.89, 27,603.94 and 6,713.11

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Solution

The fourth proportional to 18,399.89, 27,603.94 and 6,713.11 is: 10,071.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,399.89 : 27,603.94 = 6,713.11 : x
  2. Step 2: Convert to fraction form
    18,399.89/27,603.94 = 6,713.11/x
  3. Step 3: Cross multiply
    18,399.89x = 27,603.94 × 6,713.11
  4. Step 4: Simplify right side
    18,399.89x = 185,308,285.65
  5. Step 5: Solve for x
    x = 185,308,285.65/18,399.89
  6. Step 6: Final answer
    x = 10,071.16

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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.