Home / 39,997.55-55,201.94-38,683.21

Finding the Fourth Proportional to 39,997.55, 55,201.94 and 38,683.21

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Solution

The fourth proportional to 39,997.55, 55,201.94 and 38,683.21 is: 53,387.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,997.55 : 55,201.94 = 38,683.21 : x
  2. Step 2: Convert to fraction form
    39,997.55/55,201.94 = 38,683.21/x
  3. Step 3: Cross multiply
    39,997.55x = 55,201.94 × 38,683.21
  4. Step 4: Simplify right side
    39,997.55x = 2,135,388,154.57
  5. Step 5: Solve for x
    x = 2,135,388,154.57/39,997.55
  6. Step 6: Final answer
    x = 53,387.98

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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.