Home / 20,695.85-31,032.44-8,203.22

Finding the Fourth Proportional to 20,695.85, 31,032.44 and 8,203.22

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Solution

The fourth proportional to 20,695.85, 31,032.44 and 8,203.22 is: 12,300.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,695.85 : 31,032.44 = 8,203.22 : x
  2. Step 2: Convert to fraction form
    20,695.85/31,032.44 = 8,203.22/x
  3. Step 3: Cross multiply
    20,695.85x = 31,032.44 × 8,203.22
  4. Step 4: Simplify right side
    20,695.85x = 254,565,891.44
  5. Step 5: Solve for x
    x = 254,565,891.44/20,695.85
  6. Step 6: Final answer
    x = 12,300.34

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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.