Home / 30,621.48-42,262.26-18,691.73

Finding the Fourth Proportional to 30,621.48, 42,262.26 and 18,691.73

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Solution

The fourth proportional to 30,621.48, 42,262.26 and 18,691.73 is: 25,797.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,621.48 : 42,262.26 = 18,691.73 : x
  2. Step 2: Convert to fraction form
    30,621.48/42,262.26 = 18,691.73/x
  3. Step 3: Cross multiply
    30,621.48x = 42,262.26 × 18,691.73
  4. Step 4: Simplify right side
    30,621.48x = 789,954,659.65
  5. Step 5: Solve for x
    x = 789,954,659.65/30,621.48
  6. Step 6: Final answer
    x = 25,797.41

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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.