Home / 21,199.31-29,255.16-11,769.71

Finding the Fourth Proportional to 21,199.31, 29,255.16 and 11,769.71

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Solution

The fourth proportional to 21,199.31, 29,255.16 and 11,769.71 is: 16,242.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,199.31 : 29,255.16 = 11,769.71 : x
  2. Step 2: Convert to fraction form
    21,199.31/29,255.16 = 11,769.71/x
  3. Step 3: Cross multiply
    21,199.31x = 29,255.16 × 11,769.71
  4. Step 4: Simplify right side
    21,199.31x = 344,324,749.20
  5. Step 5: Solve for x
    x = 344,324,749.20/21,199.31
  6. Step 6: Final answer
    x = 16,242.26

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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.