Home / 21,310.49-29,408.77-13,757.14

Finding the Fourth Proportional to 21,310.49, 29,408.77 and 13,757.14

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Solution

The fourth proportional to 21,310.49, 29,408.77 and 13,757.14 is: 18,985.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,310.49 : 29,408.77 = 13,757.14 : x
  2. Step 2: Convert to fraction form
    21,310.49/29,408.77 = 13,757.14/x
  3. Step 3: Cross multiply
    21,310.49x = 29,408.77 × 13,757.14
  4. Step 4: Simplify right side
    21,310.49x = 404,580,620.08
  5. Step 5: Solve for x
    x = 404,580,620.08/21,310.49
  6. Step 6: Final answer
    x = 18,985.04

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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.