Home / 21,198.72-29,256.08-11,769.12

Finding the Fourth Proportional to 21,198.72, 29,256.08 and 11,769.12

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Solution

The fourth proportional to 21,198.72, 29,256.08 and 11,769.12 is: 16,242.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,198.72 : 29,256.08 = 11,769.12 : x
  2. Step 2: Convert to fraction form
    21,198.72/29,256.08 = 11,769.12/x
  3. Step 3: Cross multiply
    21,198.72x = 29,256.08 × 11,769.12
  4. Step 4: Simplify right side
    21,198.72x = 344,318,316.25
  5. Step 5: Solve for x
    x = 344,318,316.25/21,198.72
  6. Step 6: Final answer
    x = 16,242.41

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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.