Home / 20,881.26-31,318.85-6,086.21

Finding the Fourth Proportional to 20,881.26, 31,318.85 and 6,086.21

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Solution

The fourth proportional to 20,881.26, 31,318.85 and 6,086.21 is: 9,128.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,881.26 : 31,318.85 = 6,086.21 : x
  2. Step 2: Convert to fraction form
    20,881.26/31,318.85 = 6,086.21/x
  3. Step 3: Cross multiply
    20,881.26x = 31,318.85 × 6,086.21
  4. Step 4: Simplify right side
    20,881.26x = 190,612,941.46
  5. Step 5: Solve for x
    x = 190,612,941.46/20,881.26
  6. Step 6: Final answer
    x = 9,128.42

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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.