Home / 28,028.72-38,676.12-16,090.40

Finding the Fourth Proportional to 28,028.72, 38,676.12 and 16,090.40

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Solution

The fourth proportional to 28,028.72, 38,676.12 and 16,090.40 is: 22,202.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,028.72 : 38,676.12 = 16,090.40 : x
  2. Step 2: Convert to fraction form
    28,028.72/38,676.12 = 16,090.40/x
  3. Step 3: Cross multiply
    28,028.72x = 38,676.12 × 16,090.40
  4. Step 4: Simplify right side
    28,028.72x = 622,314,241.25
  5. Step 5: Solve for x
    x = 622,314,241.25/28,028.72
  6. Step 6: Final answer
    x = 22,202.73

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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.