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Finding the Fourth Proportional to 18,279.68, 27,419.52 and 7,343.36

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Solution

The fourth proportional to 18,279.68, 27,419.52 and 7,343.36 is: 11,015.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,279.68 : 27,419.52 = 7,343.36 : x
  2. Step 2: Convert to fraction form
    18,279.68/27,419.52 = 7,343.36/x
  3. Step 3: Cross multiply
    18,279.68x = 27,419.52 × 7,343.36
  4. Step 4: Simplify right side
    18,279.68x = 201,351,406.39
  5. Step 5: Solve for x
    x = 201,351,406.39/18,279.68
  6. Step 6: Final answer
    x = 11,015.04

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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.