Home / 28,163.20-42,244.80-7,388.80

Finding the Fourth Proportional to 28,163.20, 42,244.80 and 7,388.80

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Solution

The fourth proportional to 28,163.20, 42,244.80 and 7,388.80 is: 11,083.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,163.20 : 42,244.80 = 7,388.80 : x
  2. Step 2: Convert to fraction form
    28,163.20/42,244.80 = 7,388.80/x
  3. Step 3: Cross multiply
    28,163.20x = 42,244.80 × 7,388.80
  4. Step 4: Simplify right side
    28,163.20x = 312,138,378.24
  5. Step 5: Solve for x
    x = 312,138,378.24/28,163.20
  6. Step 6: Final answer
    x = 11,083.20

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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.