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Finding the Fourth Proportional to 18,502.26, 27,762.50 and 8,640.11

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Solution

The fourth proportional to 18,502.26, 27,762.50 and 8,640.11 is: 12,964.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,502.26 : 27,762.50 = 8,640.11 : x
  2. Step 2: Convert to fraction form
    18,502.26/27,762.50 = 8,640.11/x
  3. Step 3: Cross multiply
    18,502.26x = 27,762.50 × 8,640.11
  4. Step 4: Simplify right side
    18,502.26x = 239,870,936.66
  5. Step 5: Solve for x
    x = 239,870,936.66/18,502.26
  6. Step 6: Final answer
    x = 12,964.41

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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.