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Finding the Fourth Proportional to 18,003.78, 27,013.46 and 9,674.06

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Solution

The fourth proportional to 18,003.78, 27,013.46 and 9,674.06 is: 14,515.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,003.78 : 27,013.46 = 9,674.06 : x
  2. Step 2: Convert to fraction form
    18,003.78/27,013.46 = 9,674.06/x
  3. Step 3: Cross multiply
    18,003.78x = 27,013.46 × 9,674.06
  4. Step 4: Simplify right side
    18,003.78x = 261,329,649.41
  5. Step 5: Solve for x
    x = 261,329,649.41/18,003.78
  6. Step 6: Final answer
    x = 14,515.27

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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.