Home / 28,885.11-39,860.96-16,138.54

Finding the Fourth Proportional to 28,885.11, 39,860.96 and 16,138.54

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Solution

The fourth proportional to 28,885.11, 39,860.96 and 16,138.54 is: 22,270.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,885.11 : 39,860.96 = 16,138.54 : x
  2. Step 2: Convert to fraction form
    28,885.11/39,860.96 = 16,138.54/x
  3. Step 3: Cross multiply
    28,885.11x = 39,860.96 × 16,138.54
  4. Step 4: Simplify right side
    28,885.11x = 643,297,757.31
  5. Step 5: Solve for x
    x = 643,297,757.31/28,885.11
  6. Step 6: Final answer
    x = 22,270.92

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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.