Home / 21,183.36-31,775.36-10,091.20

Finding the Fourth Proportional to 21,183.36, 31,775.36 and 10,091.20

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Solution

The fourth proportional to 21,183.36, 31,775.36 and 10,091.20 is: 15,136.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,183.36 : 31,775.36 = 10,091.20 : x
  2. Step 2: Convert to fraction form
    21,183.36/31,775.36 = 10,091.20/x
  3. Step 3: Cross multiply
    21,183.36x = 31,775.36 × 10,091.20
  4. Step 4: Simplify right side
    21,183.36x = 320,651,512.83
  5. Step 5: Solve for x
    x = 320,651,512.83/21,183.36
  6. Step 6: Final answer
    x = 15,136.95

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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.