Home / 20,476.37-30,711.12-5,686.78

Finding the Fourth Proportional to 20,476.37, 30,711.12 and 5,686.78

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Solution

The fourth proportional to 20,476.37, 30,711.12 and 5,686.78 is: 8,529.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,476.37 : 30,711.12 = 5,686.78 : x
  2. Step 2: Convert to fraction form
    20,476.37/30,711.12 = 5,686.78/x
  3. Step 3: Cross multiply
    20,476.37x = 30,711.12 × 5,686.78
  4. Step 4: Simplify right side
    20,476.37x = 174,647,229.44
  5. Step 5: Solve for x
    x = 174,647,229.44/20,476.37
  6. Step 6: Final answer
    x = 8,529.21

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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.