Home / 21,987.27-32,997.11-13,679.51

Finding the Fourth Proportional to 21,987.27, 32,997.11 and 13,679.51

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Solution

The fourth proportional to 21,987.27, 32,997.11 and 13,679.51 is: 20,529.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,987.27 : 32,997.11 = 13,679.51 : x
  2. Step 2: Convert to fraction form
    21,987.27/32,997.11 = 13,679.51/x
  3. Step 3: Cross multiply
    21,987.27x = 32,997.11 × 13,679.51
  4. Step 4: Simplify right side
    21,987.27x = 451,384,062.83
  5. Step 5: Solve for x
    x = 451,384,062.83/21,987.27
  6. Step 6: Final answer
    x = 20,529.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.