Home / 18,419.40-27,621-6,732.72

Finding the Fourth Proportional to 18,419.40, 27,621 and 6,732.72

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Solution

The fourth proportional to 18,419.40, 27,621 and 6,732.72 is: 10,096.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,419.40 : 27,621 = 6,732.72 : x
  2. Step 2: Convert to fraction form
    18,419.40/27,621 = 6,732.72/x
  3. Step 3: Cross multiply
    18,419.40x = 27,621 × 6,732.72
  4. Step 4: Simplify right side
    18,419.40x = 185,964,459.12
  5. Step 5: Solve for x
    x = 185,964,459.12/18,419.40
  6. Step 6: Final answer
    x = 10,096.12

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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.