Home / 20,984.24-31,455.31-9,747.47

Finding the Fourth Proportional to 20,984.24, 31,455.31 and 9,747.47

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Solution

The fourth proportional to 20,984.24, 31,455.31 and 9,747.47 is: 14,611.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,984.24 : 31,455.31 = 9,747.47 : x
  2. Step 2: Convert to fraction form
    20,984.24/31,455.31 = 9,747.47/x
  3. Step 3: Cross multiply
    20,984.24x = 31,455.31 × 9,747.47
  4. Step 4: Simplify right side
    20,984.24x = 306,609,616.70
  5. Step 5: Solve for x
    x = 306,609,616.70/20,984.24
  6. Step 6: Final answer
    x = 14,611.42

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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.