Home / 21,190.41-29,246.67-13,635.54

Finding the Fourth Proportional to 21,190.41, 29,246.67 and 13,635.54

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Solution

The fourth proportional to 21,190.41, 29,246.67 and 13,635.54 is: 18,819.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,190.41 : 29,246.67 = 13,635.54 : x
  2. Step 2: Convert to fraction form
    21,190.41/29,246.67 = 13,635.54/x
  3. Step 3: Cross multiply
    21,190.41x = 29,246.67 × 13,635.54
  4. Step 4: Simplify right side
    21,190.41x = 398,794,138.65
  5. Step 5: Solve for x
    x = 398,794,138.65/21,190.41
  6. Step 6: Final answer
    x = 18,819.56

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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.