Home / 28,291.67-42,443.58-8,571.76

Finding the Fourth Proportional to 28,291.67, 42,443.58 and 8,571.76

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Solution

The fourth proportional to 28,291.67, 42,443.58 and 8,571.76 is: 12,859.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,291.67 : 42,443.58 = 8,571.76 : x
  2. Step 2: Convert to fraction form
    28,291.67/42,443.58 = 8,571.76/x
  3. Step 3: Cross multiply
    28,291.67x = 42,443.58 × 8,571.76
  4. Step 4: Simplify right side
    28,291.67x = 363,816,181.30
  5. Step 5: Solve for x
    x = 363,816,181.30/28,291.67
  6. Step 6: Final answer
    x = 12,859.48

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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.