Home / 21,167.34-31,743.64-8,683.82

Finding the Fourth Proportional to 21,167.34, 31,743.64 and 8,683.82

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Solution

The fourth proportional to 21,167.34, 31,743.64 and 8,683.82 is: 13,022.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,167.34 : 31,743.64 = 8,683.82 : x
  2. Step 2: Convert to fraction form
    21,167.34/31,743.64 = 8,683.82/x
  3. Step 3: Cross multiply
    21,167.34x = 31,743.64 × 8,683.82
  4. Step 4: Simplify right side
    21,167.34x = 275,656,055.90
  5. Step 5: Solve for x
    x = 275,656,055.90/21,167.34
  6. Step 6: Final answer
    x = 13,022.71

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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.