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Finding the Fourth Proportional to 18,105.78, 27,162.29 and 6,259.98

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Solution

The fourth proportional to 18,105.78, 27,162.29 and 6,259.98 is: 9,391.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,105.78 : 27,162.29 = 6,259.98 : x
  2. Step 2: Convert to fraction form
    18,105.78/27,162.29 = 6,259.98/x
  3. Step 3: Cross multiply
    18,105.78x = 27,162.29 × 6,259.98
  4. Step 4: Simplify right side
    18,105.78x = 170,035,392.15
  5. Step 5: Solve for x
    x = 170,035,392.15/18,105.78
  6. Step 6: Final answer
    x = 9,391.22

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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.