Home / 21,189.25-29,241.17-11,757.88

Finding the Fourth Proportional to 21,189.25, 29,241.17 and 11,757.88

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Solution

The fourth proportional to 21,189.25, 29,241.17 and 11,757.88 is: 16,225.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,189.25 : 29,241.17 = 11,757.88 : x
  2. Step 2: Convert to fraction form
    21,189.25/29,241.17 = 11,757.88/x
  3. Step 3: Cross multiply
    21,189.25x = 29,241.17 × 11,757.88
  4. Step 4: Simplify right side
    21,189.25x = 343,814,167.92
  5. Step 5: Solve for x
    x = 343,814,167.92/21,189.25
  6. Step 6: Final answer
    x = 16,225.88

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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.