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Finding the Fourth Proportional to 18,663.48, 27,998.06 and 6,186.65

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Solution

The fourth proportional to 18,663.48, 27,998.06 and 6,186.65 is: 9,280.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,663.48 : 27,998.06 = 6,186.65 : x
  2. Step 2: Convert to fraction form
    18,663.48/27,998.06 = 6,186.65/x
  3. Step 3: Cross multiply
    18,663.48x = 27,998.06 × 6,186.65
  4. Step 4: Simplify right side
    18,663.48x = 173,214,026.98
  5. Step 5: Solve for x
    x = 173,214,026.98/18,663.48
  6. Step 6: Final answer
    x = 9,280.91

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1.5x scale

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.