Home / 21,241.60-31,862.94-11,876.38

Finding the Fourth Proportional to 21,241.60, 31,862.94 and 11,876.38

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Solution

The fourth proportional to 21,241.60, 31,862.94 and 11,876.38 is: 17,814.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,241.60 : 31,862.94 = 11,876.38 : x
  2. Step 2: Convert to fraction form
    21,241.60/31,862.94 = 11,876.38/x
  3. Step 3: Cross multiply
    21,241.60x = 31,862.94 × 11,876.38
  4. Step 4: Simplify right side
    21,241.60x = 378,416,383.36
  5. Step 5: Solve for x
    x = 378,416,383.36/21,241.60
  6. Step 6: Final answer
    x = 17,814.87

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1.5x scale

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.