Home / 21,085.82-29,098.56-11,654.39

Finding the Fourth Proportional to 21,085.82, 29,098.56 and 11,654.39

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Solution

The fourth proportional to 21,085.82, 29,098.56 and 11,654.39 is: 16,083.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,085.82 : 29,098.56 = 11,654.39 : x
  2. Step 2: Convert to fraction form
    21,085.82/29,098.56 = 11,654.39/x
  3. Step 3: Cross multiply
    21,085.82x = 29,098.56 × 11,654.39
  4. Step 4: Simplify right side
    21,085.82x = 339,125,966.68
  5. Step 5: Solve for x
    x = 339,125,966.68/21,085.82
  6. Step 6: Final answer
    x = 16,083.13

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1.5x scale

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.