Home / 12,648.20-18,972.30-6,801.80

Finding the Fourth Proportional to 12,648.20, 18,972.30 and 6,801.80

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Solution

The fourth proportional to 12,648.20, 18,972.30 and 6,801.80 is: 10,202.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,648.20 : 18,972.30 = 6,801.80 : x
  2. Step 2: Convert to fraction form
    12,648.20/18,972.30 = 6,801.80/x
  3. Step 3: Cross multiply
    12,648.20x = 18,972.30 × 6,801.80
  4. Step 4: Simplify right side
    12,648.20x = 129,045,790.14
  5. Step 5: Solve for x
    x = 129,045,790.14/12,648.20
  6. Step 6: Final answer
    x = 10,202.70

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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.