Home / 25,380.37-38,074.20-7,851.56

Finding the Fourth Proportional to 25,380.37, 38,074.20 and 7,851.56

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Solution

The fourth proportional to 25,380.37, 38,074.20 and 7,851.56 is: 11,778.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,380.37 : 38,074.20 = 7,851.56 : x
  2. Step 2: Convert to fraction form
    25,380.37/38,074.20 = 7,851.56/x
  3. Step 3: Cross multiply
    25,380.37x = 38,074.20 × 7,851.56
  4. Step 4: Simplify right side
    25,380.37x = 298,941,960.94
  5. Step 5: Solve for x
    x = 298,941,960.94/25,380.37
  6. Step 6: Final answer
    x = 11,778.47

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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.