Home / 39,921.12-55,090.17-22,015.80

Finding the Fourth Proportional to 39,921.12, 55,090.17 and 22,015.80

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Solution

The fourth proportional to 39,921.12, 55,090.17 and 22,015.80 is: 30,381.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,921.12 : 55,090.17 = 22,015.80 : x
  2. Step 2: Convert to fraction form
    39,921.12/55,090.17 = 22,015.80/x
  3. Step 3: Cross multiply
    39,921.12x = 55,090.17 × 22,015.80
  4. Step 4: Simplify right side
    39,921.12x = 1,212,854,164.69
  5. Step 5: Solve for x
    x = 1,212,854,164.69/39,921.12
  6. Step 6: Final answer
    x = 30,381.27

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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.