Home / 29,138.87-40,211.25-16,391.09

Finding the Fourth Proportional to 29,138.87, 40,211.25 and 16,391.09

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Solution

The fourth proportional to 29,138.87, 40,211.25 and 16,391.09 is: 22,619.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,138.87 : 40,211.25 = 16,391.09 : x
  2. Step 2: Convert to fraction form
    29,138.87/40,211.25 = 16,391.09/x
  3. Step 3: Cross multiply
    29,138.87x = 40,211.25 × 16,391.09
  4. Step 4: Simplify right side
    29,138.87x = 659,106,217.76
  5. Step 5: Solve for x
    x = 659,106,217.76/29,138.87
  6. Step 6: Final answer
    x = 22,619.48

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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.