Home / 22,917.78-31,626.54-12,981.78

Finding the Fourth Proportional to 22,917.78, 31,626.54 and 12,981.78

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Solution

The fourth proportional to 22,917.78, 31,626.54 and 12,981.78 is: 17,914.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,917.78 : 31,626.54 = 12,981.78 : x
  2. Step 2: Convert to fraction form
    22,917.78/31,626.54 = 12,981.78/x
  3. Step 3: Cross multiply
    22,917.78x = 31,626.54 × 12,981.78
  4. Step 4: Simplify right side
    22,917.78x = 410,568,784.44
  5. Step 5: Solve for x
    x = 410,568,784.44/22,917.78
  6. Step 6: Final answer
    x = 17,914.86

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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.