Home / 21,135.25-29,167.53-11,703.82

Finding the Fourth Proportional to 21,135.25, 29,167.53 and 11,703.82

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Solution

The fourth proportional to 21,135.25, 29,167.53 and 11,703.82 is: 16,151.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,135.25 : 29,167.53 = 11,703.82 : x
  2. Step 2: Convert to fraction form
    21,135.25/29,167.53 = 11,703.82/x
  3. Step 3: Cross multiply
    21,135.25x = 29,167.53 × 11,703.82
  4. Step 4: Simplify right side
    21,135.25x = 341,371,520.96
  5. Step 5: Solve for x
    x = 341,371,520.96/21,135.25
  6. Step 6: Final answer
    x = 16,151.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.