Home / 22,310.28-30,785.94-12,881.88

Finding the Fourth Proportional to 22,310.28, 30,785.94 and 12,881.88

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Solution

The fourth proportional to 22,310.28, 30,785.94 and 12,881.88 is: 17,775.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,310.28 : 30,785.94 = 12,881.88 : x
  2. Step 2: Convert to fraction form
    22,310.28/30,785.94 = 12,881.88/x
  3. Step 3: Cross multiply
    22,310.28x = 30,785.94 × 12,881.88
  4. Step 4: Simplify right side
    22,310.28x = 396,580,784.77
  5. Step 5: Solve for x
    x = 396,580,784.77/22,310.28
  6. Step 6: Final answer
    x = 17,775.70

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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.