Home / 28,291.14-42,438.87-8,571.33

Finding the Fourth Proportional to 28,291.14, 42,438.87 and 8,571.33

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Solution

The fourth proportional to 28,291.14, 42,438.87 and 8,571.33 is: 12,857.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,291.14 : 42,438.87 = 8,571.33 : x
  2. Step 2: Convert to fraction form
    28,291.14/42,438.87 = 8,571.33/x
  3. Step 3: Cross multiply
    28,291.14x = 42,438.87 × 8,571.33
  4. Step 4: Simplify right side
    28,291.14x = 363,757,559.60
  5. Step 5: Solve for x
    x = 363,757,559.60/28,291.14
  6. Step 6: Final answer
    x = 12,857.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.