Home / 29,910.15-41,290.74-20,399.40

Finding the Fourth Proportional to 29,910.15, 41,290.74 and 20,399.40

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Solution

The fourth proportional to 29,910.15, 41,290.74 and 20,399.40 is: 28,161.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,910.15 : 41,290.74 = 20,399.40 : x
  2. Step 2: Convert to fraction form
    29,910.15/41,290.74 = 20,399.40/x
  3. Step 3: Cross multiply
    29,910.15x = 41,290.74 × 20,399.40
  4. Step 4: Simplify right side
    29,910.15x = 842,306,321.56
  5. Step 5: Solve for x
    x = 842,306,321.56/29,910.15
  6. Step 6: Final answer
    x = 28,161.22

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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.