Home / 21,363.14-31,982.45-12,451.22

Finding the Fourth Proportional to 21,363.14, 31,982.45 and 12,451.22

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Solution

The fourth proportional to 21,363.14, 31,982.45 and 12,451.22 is: 18,640.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,363.14 : 31,982.45 = 12,451.22 : x
  2. Step 2: Convert to fraction form
    21,363.14/31,982.45 = 12,451.22/x
  3. Step 3: Cross multiply
    21,363.14x = 31,982.45 × 12,451.22
  4. Step 4: Simplify right side
    21,363.14x = 398,220,418.85
  5. Step 5: Solve for x
    x = 398,220,418.85/21,363.14
  6. Step 6: Final answer
    x = 18,640.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.