Home / 20,380.45-30,548.23-15,366.75

Finding the Fourth Proportional to 20,380.45, 30,548.23 and 15,366.75

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Solution

The fourth proportional to 20,380.45, 30,548.23 and 15,366.75 is: 23,033.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,380.45 : 30,548.23 = 15,366.75 : x
  2. Step 2: Convert to fraction form
    20,380.45/30,548.23 = 15,366.75/x
  3. Step 3: Cross multiply
    20,380.45x = 30,548.23 × 15,366.75
  4. Step 4: Simplify right side
    20,380.45x = 469,426,783.78
  5. Step 5: Solve for x
    x = 469,426,783.78/20,380.45
  6. Step 6: Final answer
    x = 23,033.20

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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.