Home / 20,836.59-28,753.79-11,886.99

Finding the Fourth Proportional to 20,836.59, 28,753.79 and 11,886.99

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Solution

The fourth proportional to 20,836.59, 28,753.79 and 11,886.99 is: 16,403.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,836.59 : 28,753.79 = 11,886.99 : x
  2. Step 2: Convert to fraction form
    20,836.59/28,753.79 = 11,886.99/x
  3. Step 3: Cross multiply
    20,836.59x = 28,753.79 × 11,886.99
  4. Step 4: Simplify right side
    20,836.59x = 341,795,954.76
  5. Step 5: Solve for x
    x = 341,795,954.76/20,836.59
  6. Step 6: Final answer
    x = 16,403.64

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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.