Home / 20,837.66-31,256.64-6,986.66

Finding the Fourth Proportional to 20,837.66, 31,256.64 and 6,986.66

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Solution

The fourth proportional to 20,837.66, 31,256.64 and 6,986.66 is: 10,480.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,837.66 : 31,256.64 = 6,986.66 : x
  2. Step 2: Convert to fraction form
    20,837.66/31,256.64 = 6,986.66/x
  3. Step 3: Cross multiply
    20,837.66x = 31,256.64 × 6,986.66
  4. Step 4: Simplify right side
    20,837.66x = 218,379,516.42
  5. Step 5: Solve for x
    x = 218,379,516.42/20,837.66
  6. Step 6: Final answer
    x = 10,480.04

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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.