Home / 8,542.20-12,813.30-6,814.20

Finding the Fourth Proportional to 8,542.20, 12,813.30 and 6,814.20

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Solution

The fourth proportional to 8,542.20, 12,813.30 and 6,814.20 is: 10,221.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,542.20 : 12,813.30 = 6,814.20 : x
  2. Step 2: Convert to fraction form
    8,542.20/12,813.30 = 6,814.20/x
  3. Step 3: Cross multiply
    8,542.20x = 12,813.30 × 6,814.20
  4. Step 4: Simplify right side
    8,542.20x = 87,312,388.86
  5. Step 5: Solve for x
    x = 87,312,388.86/8,542.20
  6. Step 6: Final answer
    x = 10,221.30

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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.