Home / 33,120.90-49,681.31-13,399.61

Finding the Fourth Proportional to 33,120.90, 49,681.31 and 13,399.61

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Solution

The fourth proportional to 33,120.90, 49,681.31 and 13,399.61 is: 20,099.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,120.90 : 49,681.31 = 13,399.61 : x
  2. Step 2: Convert to fraction form
    33,120.90/49,681.31 = 13,399.61/x
  3. Step 3: Cross multiply
    33,120.90x = 49,681.31 × 13,399.61
  4. Step 4: Simplify right side
    33,120.90x = 665,709,862.88
  5. Step 5: Solve for x
    x = 665,709,862.88/33,120.90
  6. Step 6: Final answer
    x = 20,099.39

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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.