Home / 39,772.22-54,885.60-21,868.38

Finding the Fourth Proportional to 39,772.22, 54,885.60 and 21,868.38

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Solution

The fourth proportional to 39,772.22, 54,885.60 and 21,868.38 is: 30,178.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,772.22 : 54,885.60 = 21,868.38 : x
  2. Step 2: Convert to fraction form
    39,772.22/54,885.60 = 21,868.38/x
  3. Step 3: Cross multiply
    39,772.22x = 54,885.60 × 21,868.38
  4. Step 4: Simplify right side
    39,772.22x = 1,200,259,157.33
  5. Step 5: Solve for x
    x = 1,200,259,157.33/39,772.22
  6. Step 6: Final answer
    x = 30,178.33

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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.