Home / 30,309.80-41,832.45-18,374.85

Finding the Fourth Proportional to 30,309.80, 41,832.45 and 18,374.85

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Solution

The fourth proportional to 30,309.80, 41,832.45 and 18,374.85 is: 25,360.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,309.80 : 41,832.45 = 18,374.85 : x
  2. Step 2: Convert to fraction form
    30,309.80/41,832.45 = 18,374.85/x
  3. Step 3: Cross multiply
    30,309.80x = 41,832.45 × 18,374.85
  4. Step 4: Simplify right side
    30,309.80x = 768,664,993.88
  5. Step 5: Solve for x
    x = 768,664,993.88/30,309.80
  6. Step 6: Final answer
    x = 25,360.28

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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.