Home / 11,821.65-17,729.40-5,580.03

Finding the Fourth Proportional to 11,821.65, 17,729.40 and 5,580.03

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Solution

The fourth proportional to 11,821.65, 17,729.40 and 5,580.03 is: 8,368.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,821.65 : 17,729.40 = 5,580.03 : x
  2. Step 2: Convert to fraction form
    11,821.65/17,729.40 = 5,580.03/x
  3. Step 3: Cross multiply
    11,821.65x = 17,729.40 × 5,580.03
  4. Step 4: Simplify right side
    11,821.65x = 98,930,583.88
  5. Step 5: Solve for x
    x = 98,930,583.88/11,821.65
  6. Step 6: Final answer
    x = 8,368.59

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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.