Home / 20,827.84-28,742.52-11,396.56

Finding the Fourth Proportional to 20,827.84, 28,742.52 and 11,396.56

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Solution

The fourth proportional to 20,827.84, 28,742.52 and 11,396.56 is: 15,727.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,827.84 : 28,742.52 = 11,396.56 : x
  2. Step 2: Convert to fraction form
    20,827.84/28,742.52 = 11,396.56/x
  3. Step 3: Cross multiply
    20,827.84x = 28,742.52 × 11,396.56
  4. Step 4: Simplify right side
    20,827.84x = 327,565,853.73
  5. Step 5: Solve for x
    x = 327,565,853.73/20,827.84
  6. Step 6: Final answer
    x = 15,727.31

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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.