Home / 20,520.18-30,757.70-8,037.87

Finding the Fourth Proportional to 20,520.18, 30,757.70 and 8,037.87

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Solution

The fourth proportional to 20,520.18, 30,757.70 and 8,037.87 is: 12,047.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,520.18 : 30,757.70 = 8,037.87 : x
  2. Step 2: Convert to fraction form
    20,520.18/30,757.70 = 8,037.87/x
  3. Step 3: Cross multiply
    20,520.18x = 30,757.70 × 8,037.87
  4. Step 4: Simplify right side
    20,520.18x = 247,226,491.09
  5. Step 5: Solve for x
    x = 247,226,491.09/20,520.18
  6. Step 6: Final answer
    x = 12,047.97

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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.