Home / 39,997.80-55,209.60-25,855.20

Finding the Fourth Proportional to 39,997.80, 55,209.60 and 25,855.20

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Solution

The fourth proportional to 39,997.80, 55,209.60 and 25,855.20 is: 35,688.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,997.80 : 55,209.60 = 25,855.20 : x
  2. Step 2: Convert to fraction form
    39,997.80/55,209.60 = 25,855.20/x
  3. Step 3: Cross multiply
    39,997.80x = 55,209.60 × 25,855.20
  4. Step 4: Simplify right side
    39,997.80x = 1,427,455,249.92
  5. Step 5: Solve for x
    x = 1,427,455,249.92/39,997.80
  6. Step 6: Final answer
    x = 35,688.34

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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.