Home / 21,408.26-29,543.61-12,910.82

Finding the Fourth Proportional to 21,408.26, 29,543.61 and 12,910.82

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Solution

The fourth proportional to 21,408.26, 29,543.61 and 12,910.82 is: 17,817.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,408.26 : 29,543.61 = 12,910.82 : x
  2. Step 2: Convert to fraction form
    21,408.26/29,543.61 = 12,910.82/x
  3. Step 3: Cross multiply
    21,408.26x = 29,543.61 × 12,910.82
  4. Step 4: Simplify right side
    21,408.26x = 381,432,230.86
  5. Step 5: Solve for x
    x = 381,432,230.86/21,408.26
  6. Step 6: Final answer
    x = 17,817.06

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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.