Home / 21,244.80-29,301.60-13,691.88

Finding the Fourth Proportional to 21,244.80, 29,301.60 and 13,691.88

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Solution

The fourth proportional to 21,244.80, 29,301.60 and 13,691.88 is: 18,884.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,244.80 : 29,301.60 = 13,691.88 : x
  2. Step 2: Convert to fraction form
    21,244.80/29,301.60 = 13,691.88/x
  3. Step 3: Cross multiply
    21,244.80x = 29,301.60 × 13,691.88
  4. Step 4: Simplify right side
    21,244.80x = 401,193,991.01
  5. Step 5: Solve for x
    x = 401,193,991.01/21,244.80
  6. Step 6: Final answer
    x = 18,884.34

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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.