Home / 21,151.24-29,185.38-11,719.48

Finding the Fourth Proportional to 21,151.24, 29,185.38 and 11,719.48

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Solution

The fourth proportional to 21,151.24, 29,185.38 and 11,719.48 is: 16,171.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,151.24 : 29,185.38 = 11,719.48 : x
  2. Step 2: Convert to fraction form
    21,151.24/29,185.38 = 11,719.48/x
  3. Step 3: Cross multiply
    21,151.24x = 29,185.38 × 11,719.48
  4. Step 4: Simplify right side
    21,151.24x = 342,037,477.20
  5. Step 5: Solve for x
    x = 342,037,477.20/21,151.24
  6. Step 6: Final answer
    x = 16,171.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.