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Finding the Fourth Proportional to 18,343.81, 27,515.72 and 7,954.75

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Solution

The fourth proportional to 18,343.81, 27,515.72 and 7,954.75 is: 11,932.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,343.81 : 27,515.72 = 7,954.75 : x
  2. Step 2: Convert to fraction form
    18,343.81/27,515.72 = 7,954.75/x
  3. Step 3: Cross multiply
    18,343.81x = 27,515.72 × 7,954.75
  4. Step 4: Simplify right side
    18,343.81x = 218,880,673.67
  5. Step 5: Solve for x
    x = 218,880,673.67/18,343.81
  6. Step 6: Final answer
    x = 11,932.13

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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.