Home / 21,856.22-30,161.53-12,296.12

Finding the Fourth Proportional to 21,856.22, 30,161.53 and 12,296.12

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Solution

The fourth proportional to 21,856.22, 30,161.53 and 12,296.12 is: 16,968.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,856.22 : 30,161.53 = 12,296.12 : x
  2. Step 2: Convert to fraction form
    21,856.22/30,161.53 = 12,296.12/x
  3. Step 3: Cross multiply
    21,856.22x = 30,161.53 × 12,296.12
  4. Step 4: Simplify right side
    21,856.22x = 370,869,716.86
  5. Step 5: Solve for x
    x = 370,869,716.86/21,856.22
  6. Step 6: Final answer
    x = 16,968.61

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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.