Home / 8,006.20-12,022.80-6,688.60

Finding the Fourth Proportional to 8,006.20, 12,022.80 and 6,688.60

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Solution

The fourth proportional to 8,006.20, 12,022.80 and 6,688.60 is: 10,044.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,006.20 : 12,022.80 = 6,688.60 : x
  2. Step 2: Convert to fraction form
    8,006.20/12,022.80 = 6,688.60/x
  3. Step 3: Cross multiply
    8,006.20x = 12,022.80 × 6,688.60
  4. Step 4: Simplify right side
    8,006.20x = 80,415,700.08
  5. Step 5: Solve for x
    x = 80,415,700.08/8,006.20
  6. Step 6: Final answer
    x = 10,044.18

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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.