Home / 13,270.20-19,907.70-6,679.80

Finding the Fourth Proportional to 13,270.20, 19,907.70 and 6,679.80

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Solution

The fourth proportional to 13,270.20, 19,907.70 and 6,679.80 is: 10,020.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,270.20 : 19,907.70 = 6,679.80 : x
  2. Step 2: Convert to fraction form
    13,270.20/19,907.70 = 6,679.80/x
  3. Step 3: Cross multiply
    13,270.20x = 19,907.70 × 6,679.80
  4. Step 4: Simplify right side
    13,270.20x = 132,979,454.46
  5. Step 5: Solve for x
    x = 132,979,454.46/13,270.20
  6. Step 6: Final answer
    x = 10,020.91

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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.