Home / 20,505.70-30,760.37-5,714.90

Finding the Fourth Proportional to 20,505.70, 30,760.37 and 5,714.90

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Solution

The fourth proportional to 20,505.70, 30,760.37 and 5,714.90 is: 8,572.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,505.70 : 30,760.37 = 5,714.90 : x
  2. Step 2: Convert to fraction form
    20,505.70/30,760.37 = 5,714.90/x
  3. Step 3: Cross multiply
    20,505.70x = 30,760.37 × 5,714.90
  4. Step 4: Simplify right side
    20,505.70x = 175,792,299.00
  5. Step 5: Solve for x
    x = 175,792,299.00/20,505.70
  6. Step 6: Final answer
    x = 8,572.85

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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.