Home / 22,382.12-30,887.30-12,310.71

Finding the Fourth Proportional to 22,382.12, 30,887.30 and 12,310.71

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Solution

The fourth proportional to 22,382.12, 30,887.30 and 12,310.71 is: 16,988.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,382.12 : 30,887.30 = 12,310.71 : x
  2. Step 2: Convert to fraction form
    22,382.12/30,887.30 = 12,310.71/x
  3. Step 3: Cross multiply
    22,382.12x = 30,887.30 × 12,310.71
  4. Step 4: Simplify right side
    22,382.12x = 380,244,531.43
  5. Step 5: Solve for x
    x = 380,244,531.43/22,382.12
  6. Step 6: Final answer
    x = 16,988.77

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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.