Home / 21,513.62-29,689.17-11,954.39

Finding the Fourth Proportional to 21,513.62, 29,689.17 and 11,954.39

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Solution

The fourth proportional to 21,513.62, 29,689.17 and 11,954.39 is: 16,497.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,513.62 : 29,689.17 = 11,954.39 : x
  2. Step 2: Convert to fraction form
    21,513.62/29,689.17 = 11,954.39/x
  3. Step 3: Cross multiply
    21,513.62x = 29,689.17 × 11,954.39
  4. Step 4: Simplify right side
    21,513.62x = 354,915,768.51
  5. Step 5: Solve for x
    x = 354,915,768.51/21,513.62
  6. Step 6: Final answer
    x = 16,497.26

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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.