Home / 21,408.90-29,543.68-11,849.19

Finding the Fourth Proportional to 21,408.90, 29,543.68 and 11,849.19

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Solution

The fourth proportional to 21,408.90, 29,543.68 and 11,849.19 is: 16,351.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,408.90 : 29,543.68 = 11,849.19 : x
  2. Step 2: Convert to fraction form
    21,408.90/29,543.68 = 11,849.19/x
  3. Step 3: Cross multiply
    21,408.90x = 29,543.68 × 11,849.19
  4. Step 4: Simplify right side
    21,408.90x = 350,068,677.62
  5. Step 5: Solve for x
    x = 350,068,677.62/21,408.90
  6. Step 6: Final answer
    x = 16,351.55

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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.