Home / 18,206.72-27,316.61-7,121.36

Finding the Fourth Proportional to 18,206.72, 27,316.61 and 7,121.36

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Solution

The fourth proportional to 18,206.72, 27,316.61 and 7,121.36 is: 10,684.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,206.72 : 27,316.61 = 7,121.36 : x
  2. Step 2: Convert to fraction form
    18,206.72/27,316.61 = 7,121.36/x
  3. Step 3: Cross multiply
    18,206.72x = 27,316.61 × 7,121.36
  4. Step 4: Simplify right side
    18,206.72x = 194,531,473.18
  5. Step 5: Solve for x
    x = 194,531,473.18/18,206.72
  6. Step 6: Final answer
    x = 10,684.60

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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.