Home / 20,836.17-28,753.83-13,764.06

Finding the Fourth Proportional to 20,836.17, 28,753.83 and 13,764.06

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Solution

The fourth proportional to 20,836.17, 28,753.83 and 13,764.06 is: 18,994.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,836.17 : 28,753.83 = 13,764.06 : x
  2. Step 2: Convert to fraction form
    20,836.17/28,753.83 = 13,764.06/x
  3. Step 3: Cross multiply
    20,836.17x = 28,753.83 × 13,764.06
  4. Step 4: Simplify right side
    20,836.17x = 395,769,441.35
  5. Step 5: Solve for x
    x = 395,769,441.35/20,836.17
  6. Step 6: Final answer
    x = 18,994.35

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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.