Home / 21,270.66-31,908.24-8,791.62

Finding the Fourth Proportional to 21,270.66, 31,908.24 and 8,791.62

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Solution

The fourth proportional to 21,270.66, 31,908.24 and 8,791.62 is: 13,188.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,270.66 : 31,908.24 = 8,791.62 : x
  2. Step 2: Convert to fraction form
    21,270.66/31,908.24 = 8,791.62/x
  3. Step 3: Cross multiply
    21,270.66x = 31,908.24 × 8,791.62
  4. Step 4: Simplify right side
    21,270.66x = 280,525,120.95
  5. Step 5: Solve for x
    x = 280,525,120.95/21,270.66
  6. Step 6: Final answer
    x = 13,188.36

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1.5x scale

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.