Home / 21,150.31-29,187.40-11,590.43

Finding the Fourth Proportional to 21,150.31, 29,187.40 and 11,590.43

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Solution

The fourth proportional to 21,150.31, 29,187.40 and 11,590.43 is: 15,994.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,150.31 : 29,187.40 = 11,590.43 : x
  2. Step 2: Convert to fraction form
    21,150.31/29,187.40 = 11,590.43/x
  3. Step 3: Cross multiply
    21,150.31x = 29,187.40 × 11,590.43
  4. Step 4: Simplify right side
    21,150.31x = 338,294,516.58
  5. Step 5: Solve for x
    x = 338,294,516.58/21,150.31
  6. Step 6: Final answer
    x = 15,994.78

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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.