Home / 38,682.20-58,015.20-18,974.90

Finding the Fourth Proportional to 38,682.20, 58,015.20 and 18,974.90

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Solution

The fourth proportional to 38,682.20, 58,015.20 and 18,974.90 is: 28,458.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,682.20 : 58,015.20 = 18,974.90 : x
  2. Step 2: Convert to fraction form
    38,682.20/58,015.20 = 18,974.90/x
  3. Step 3: Cross multiply
    38,682.20x = 58,015.20 × 18,974.90
  4. Step 4: Simplify right side
    38,682.20x = 1,100,832,618.48
  5. Step 5: Solve for x
    x = 1,100,832,618.48/38,682.20
  6. Step 6: Final answer
    x = 28,458.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.