Home / 20,908.26-31,364.01-5,325.75

Finding the Fourth Proportional to 20,908.26, 31,364.01 and 5,325.75

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Solution

The fourth proportional to 20,908.26, 31,364.01 and 5,325.75 is: 7,989.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,908.26 : 31,364.01 = 5,325.75 : x
  2. Step 2: Convert to fraction form
    20,908.26/31,364.01 = 5,325.75/x
  3. Step 3: Cross multiply
    20,908.26x = 31,364.01 × 5,325.75
  4. Step 4: Simplify right side
    20,908.26x = 167,036,876.26
  5. Step 5: Solve for x
    x = 167,036,876.26/20,908.26
  6. Step 6: Final answer
    x = 7,989.04

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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.