Home / 20,682.27-31,012.67-10,147.68

Finding the Fourth Proportional to 20,682.27, 31,012.67 and 10,147.68

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Solution

The fourth proportional to 20,682.27, 31,012.67 and 10,147.68 is: 15,216.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,682.27 : 31,012.67 = 10,147.68 : x
  2. Step 2: Convert to fraction form
    20,682.27/31,012.67 = 10,147.68/x
  3. Step 3: Cross multiply
    20,682.27x = 31,012.67 × 10,147.68
  4. Step 4: Simplify right side
    20,682.27x = 314,706,445.30
  5. Step 5: Solve for x
    x = 314,706,445.30/20,682.27
  6. Step 6: Final answer
    x = 15,216.25

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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.