Home / 22,121.43-30,533.09-13,630.82

Finding the Fourth Proportional to 22,121.43, 30,533.09 and 13,630.82

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Solution

The fourth proportional to 22,121.43, 30,533.09 and 13,630.82 is: 18,813.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,121.43 : 30,533.09 = 13,630.82 : x
  2. Step 2: Convert to fraction form
    22,121.43/30,533.09 = 13,630.82/x
  3. Step 3: Cross multiply
    22,121.43x = 30,533.09 × 13,630.82
  4. Step 4: Simplify right side
    22,121.43x = 416,190,833.01
  5. Step 5: Solve for x
    x = 416,190,833.01/22,121.43
  6. Step 6: Final answer
    x = 18,813.92

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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.