Home / 21,189.60-29,240.67-11,629.29

Finding the Fourth Proportional to 21,189.60, 29,240.67 and 11,629.29

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Solution

The fourth proportional to 21,189.60, 29,240.67 and 11,629.29 is: 16,047.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,189.60 : 29,240.67 = 11,629.29 : x
  2. Step 2: Convert to fraction form
    21,189.60/29,240.67 = 11,629.29/x
  3. Step 3: Cross multiply
    21,189.60x = 29,240.67 × 11,629.29
  4. Step 4: Simplify right side
    21,189.60x = 340,048,231.22
  5. Step 5: Solve for x
    x = 340,048,231.22/21,189.60
  6. Step 6: Final answer
    x = 16,047.88

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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.