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Finding the Fourth Proportional to 18,242.70, 27,328.62 and 11,983.71

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Solution

The fourth proportional to 18,242.70, 27,328.62 and 11,983.71 is: 17,952.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,242.70 : 27,328.62 = 11,983.71 : x
  2. Step 2: Convert to fraction form
    18,242.70/27,328.62 = 11,983.71/x
  3. Step 3: Cross multiply
    18,242.70x = 27,328.62 × 11,983.71
  4. Step 4: Simplify right side
    18,242.70x = 327,498,256.78
  5. Step 5: Solve for x
    x = 327,498,256.78/18,242.70
  6. Step 6: Final answer
    x = 17,952.29

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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.