Home / 20,827.88-28,742.47-11,396.44

Finding the Fourth Proportional to 20,827.88, 28,742.47 and 11,396.44

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Solution

The fourth proportional to 20,827.88, 28,742.47 and 11,396.44 is: 15,727.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,827.88 : 28,742.47 = 11,396.44 : x
  2. Step 2: Convert to fraction form
    20,827.88/28,742.47 = 11,396.44/x
  3. Step 3: Cross multiply
    20,827.88x = 28,742.47 × 11,396.44
  4. Step 4: Simplify right side
    20,827.88x = 327,561,734.46
  5. Step 5: Solve for x
    x = 327,561,734.46/20,827.88
  6. Step 6: Final answer
    x = 15,727.08

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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.