Home / 21,040.57-31,557.88-8,566.03

Finding the Fourth Proportional to 21,040.57, 31,557.88 and 8,566.03

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Solution

The fourth proportional to 21,040.57, 31,557.88 and 8,566.03 is: 12,847.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,040.57 : 31,557.88 = 8,566.03 : x
  2. Step 2: Convert to fraction form
    21,040.57/31,557.88 = 8,566.03/x
  3. Step 3: Cross multiply
    21,040.57x = 31,557.88 × 8,566.03
  4. Step 4: Simplify right side
    21,040.57x = 270,325,546.20
  5. Step 5: Solve for x
    x = 270,325,546.20/21,040.57
  6. Step 6: Final answer
    x = 12,847.83

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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.