Home / 21,183.48-31,775.20-7,329.24

Finding the Fourth Proportional to 21,183.48, 31,775.20 and 7,329.24

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Solution

The fourth proportional to 21,183.48, 31,775.20 and 7,329.24 is: 10,993.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,183.48 : 31,775.20 = 7,329.24 : x
  2. Step 2: Convert to fraction form
    21,183.48/31,775.20 = 7,329.24/x
  3. Step 3: Cross multiply
    21,183.48x = 31,775.20 × 7,329.24
  4. Step 4: Simplify right side
    21,183.48x = 232,888,066.85
  5. Step 5: Solve for x
    x = 232,888,066.85/21,183.48
  6. Step 6: Final answer
    x = 10,993.85

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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.