Home / 21,408.48-29,543.82-12,456.24

Finding the Fourth Proportional to 21,408.48, 29,543.82 and 12,456.24

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Solution

The fourth proportional to 21,408.48, 29,543.82 and 12,456.24 is: 17,189.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,408.48 : 29,543.82 = 12,456.24 : x
  2. Step 2: Convert to fraction form
    21,408.48/29,543.82 = 12,456.24/x
  3. Step 3: Cross multiply
    21,408.48x = 29,543.82 × 12,456.24
  4. Step 4: Simplify right side
    21,408.48x = 368,004,912.44
  5. Step 5: Solve for x
    x = 368,004,912.44/21,408.48
  6. Step 6: Final answer
    x = 17,189.68

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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.