Home / 21,189.30-29,242.07-11,629.52

Finding the Fourth Proportional to 21,189.30, 29,242.07 and 11,629.52

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Solution

The fourth proportional to 21,189.30, 29,242.07 and 11,629.52 is: 16,049.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,189.30 : 29,242.07 = 11,629.52 : x
  2. Step 2: Convert to fraction form
    21,189.30/29,242.07 = 11,629.52/x
  3. Step 3: Cross multiply
    21,189.30x = 29,242.07 × 11,629.52
  4. Step 4: Simplify right side
    21,189.30x = 340,071,033.55
  5. Step 5: Solve for x
    x = 340,071,033.55/21,189.30
  6. Step 6: Final answer
    x = 16,049.19

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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.