Home / 13,562.20-20,345.49-4,200.02

Finding the Fourth Proportional to 13,562.20, 20,345.49 and 4,200.02

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Solution

The fourth proportional to 13,562.20, 20,345.49 and 4,200.02 is: 6,300.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,562.20 : 20,345.49 = 4,200.02 : x
  2. Step 2: Convert to fraction form
    13,562.20/20,345.49 = 4,200.02/x
  3. Step 3: Cross multiply
    13,562.20x = 20,345.49 × 4,200.02
  4. Step 4: Simplify right side
    13,562.20x = 85,451,464.91
  5. Step 5: Solve for x
    x = 85,451,464.91/13,562.20
  6. Step 6: Final answer
    x = 6,300.71

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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.