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Finding the Fourth Proportional to 18,510.51, 27,769.85 and 8,644.38

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Solution

The fourth proportional to 18,510.51, 27,769.85 and 8,644.38 is: 12,968.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,510.51 : 27,769.85 = 8,644.38 : x
  2. Step 2: Convert to fraction form
    18,510.51/27,769.85 = 8,644.38/x
  3. Step 3: Cross multiply
    18,510.51x = 27,769.85 × 8,644.38
  4. Step 4: Simplify right side
    18,510.51x = 240,053,135.94
  5. Step 5: Solve for x
    x = 240,053,135.94/18,510.51
  6. Step 6: Final answer
    x = 12,968.48

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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.