Home / 28,216.91-42,321.03-7,442.03

Finding the Fourth Proportional to 28,216.91, 42,321.03 and 7,442.03

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Solution

The fourth proportional to 28,216.91, 42,321.03 and 7,442.03 is: 11,161.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,216.91 : 42,321.03 = 7,442.03 : x
  2. Step 2: Convert to fraction form
    28,216.91/42,321.03 = 7,442.03/x
  3. Step 3: Cross multiply
    28,216.91x = 42,321.03 × 7,442.03
  4. Step 4: Simplify right side
    28,216.91x = 314,954,163.29
  5. Step 5: Solve for x
    x = 314,954,163.29/28,216.91
  6. Step 6: Final answer
    x = 11,161.90

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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.