Home / 8,026.20-12,039.30-7,219.80

Finding the Fourth Proportional to 8,026.20, 12,039.30 and 7,219.80

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Solution

The fourth proportional to 8,026.20, 12,039.30 and 7,219.80 is: 10,829.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,026.20 : 12,039.30 = 7,219.80 : x
  2. Step 2: Convert to fraction form
    8,026.20/12,039.30 = 7,219.80/x
  3. Step 3: Cross multiply
    8,026.20x = 12,039.30 × 7,219.80
  4. Step 4: Simplify right side
    8,026.20x = 86,921,338.14
  5. Step 5: Solve for x
    x = 86,921,338.14/8,026.20
  6. Step 6: Final answer
    x = 10,829.70

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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.