Home / 13,240.65-19,860.96-3,379.92

Finding the Fourth Proportional to 13,240.65, 19,860.96 and 3,379.92

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Solution

The fourth proportional to 13,240.65, 19,860.96 and 3,379.92 is: 5,069.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,240.65 : 19,860.96 = 3,379.92 : x
  2. Step 2: Convert to fraction form
    13,240.65/19,860.96 = 3,379.92/x
  3. Step 3: Cross multiply
    13,240.65x = 19,860.96 × 3,379.92
  4. Step 4: Simplify right side
    13,240.65x = 67,128,472.56
  5. Step 5: Solve for x
    x = 67,128,472.56/13,240.65
  6. Step 6: Final answer
    x = 5,069.88

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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.