Home / 39,915.60-55,083.96-22,011.30

Finding the Fourth Proportional to 39,915.60, 55,083.96 and 22,011.30

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Solution

The fourth proportional to 39,915.60, 55,083.96 and 22,011.30 is: 30,375.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,915.60 : 55,083.96 = 22,011.30 : x
  2. Step 2: Convert to fraction form
    39,915.60/55,083.96 = 22,011.30/x
  3. Step 3: Cross multiply
    39,915.60x = 55,083.96 × 22,011.30
  4. Step 4: Simplify right side
    39,915.60x = 1,212,469,568.75
  5. Step 5: Solve for x
    x = 1,212,469,568.75/39,915.60
  6. Step 6: Final answer
    x = 30,375.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.