Home / 28,093.20-42,134.40-8,372.40

Finding the Fourth Proportional to 28,093.20, 42,134.40 and 8,372.40

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Solution

The fourth proportional to 28,093.20, 42,134.40 and 8,372.40 is: 12,556.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,093.20 : 42,134.40 = 8,372.40 : x
  2. Step 2: Convert to fraction form
    28,093.20/42,134.40 = 8,372.40/x
  3. Step 3: Cross multiply
    28,093.20x = 42,134.40 × 8,372.40
  4. Step 4: Simplify right side
    28,093.20x = 352,766,050.56
  5. Step 5: Solve for x
    x = 352,766,050.56/28,093.20
  6. Step 6: Final answer
    x = 12,556.99

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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.