Home / 22,190.31-30,622.84-12,629.73

Finding the Fourth Proportional to 22,190.31, 30,622.84 and 12,629.73

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Solution

The fourth proportional to 22,190.31, 30,622.84 and 12,629.73 is: 17,429.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,190.31 : 30,622.84 = 12,629.73 : x
  2. Step 2: Convert to fraction form
    22,190.31/30,622.84 = 12,629.73/x
  3. Step 3: Cross multiply
    22,190.31x = 30,622.84 × 12,629.73
  4. Step 4: Simplify right side
    22,190.31x = 386,758,061.33
  5. Step 5: Solve for x
    x = 386,758,061.33/22,190.31
  6. Step 6: Final answer
    x = 17,429.14

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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.