Home / 20,964.20-31,477.44-8,508.63

Finding the Fourth Proportional to 20,964.20, 31,477.44 and 8,508.63

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Solution

The fourth proportional to 20,964.20, 31,477.44 and 8,508.63 is: 12,775.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,964.20 : 31,477.44 = 8,508.63 : x
  2. Step 2: Convert to fraction form
    20,964.20/31,477.44 = 8,508.63/x
  3. Step 3: Cross multiply
    20,964.20x = 31,477.44 × 8,508.63
  4. Step 4: Simplify right side
    20,964.20x = 267,829,890.31
  5. Step 5: Solve for x
    x = 267,829,890.31/20,964.20
  6. Step 6: Final answer
    x = 12,775.59

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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.