Home / 21,189.94-29,242.09-11,629.88

Finding the Fourth Proportional to 21,189.94, 29,242.09 and 11,629.88

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Solution

The fourth proportional to 21,189.94, 29,242.09 and 11,629.88 is: 16,049.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,189.94 : 29,242.09 = 11,629.88 : x
  2. Step 2: Convert to fraction form
    21,189.94/29,242.09 = 11,629.88/x
  3. Step 3: Cross multiply
    21,189.94x = 29,242.09 × 11,629.88
  4. Step 4: Simplify right side
    21,189.94x = 340,082,041.68
  5. Step 5: Solve for x
    x = 340,082,041.68/21,189.94
  6. Step 6: Final answer
    x = 16,049.22

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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.