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Finding the Fourth Proportional to 18,112.74, 27,162.29 and 7,583.49

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Solution

The fourth proportional to 18,112.74, 27,162.29 and 7,583.49 is: 11,372.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,112.74 : 27,162.29 = 7,583.49 : x
  2. Step 2: Convert to fraction form
    18,112.74/27,162.29 = 7,583.49/x
  3. Step 3: Cross multiply
    18,112.74x = 27,162.29 × 7,583.49
  4. Step 4: Simplify right side
    18,112.74x = 205,984,954.59
  5. Step 5: Solve for x
    x = 205,984,954.59/18,112.74
  6. Step 6: Final answer
    x = 11,372.38

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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.