Home / 21,189.13-29,240.97-11,629.07

Finding the Fourth Proportional to 21,189.13, 29,240.97 and 11,629.07

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Solution

The fourth proportional to 21,189.13, 29,240.97 and 11,629.07 is: 16,048.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,189.13 : 29,240.97 = 11,629.07 : x
  2. Step 2: Convert to fraction form
    21,189.13/29,240.97 = 11,629.07/x
  3. Step 3: Cross multiply
    21,189.13x = 29,240.97 × 11,629.07
  4. Step 4: Simplify right side
    21,189.13x = 340,045,287.00
  5. Step 5: Solve for x
    x = 340,045,287.00/21,189.13
  6. Step 6: Final answer
    x = 16,048.10

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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.