Home / 13,907.98-20,861.78-3,378.08

Finding the Fourth Proportional to 13,907.98, 20,861.78 and 3,378.08

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Solution

The fourth proportional to 13,907.98, 20,861.78 and 3,378.08 is: 5,067.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,907.98 : 20,861.78 = 3,378.08 : x
  2. Step 2: Convert to fraction form
    13,907.98/20,861.78 = 3,378.08/x
  3. Step 3: Cross multiply
    13,907.98x = 20,861.78 × 3,378.08
  4. Step 4: Simplify right side
    13,907.98x = 70,472,761.78
  5. Step 5: Solve for x
    x = 70,472,761.78/13,907.98
  6. Step 6: Final answer
    x = 5,067.07

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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.