Home / 20,817.56-28,727.52-11,867.95

Finding the Fourth Proportional to 20,817.56, 28,727.52 and 11,867.95

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Solution

The fourth proportional to 20,817.56, 28,727.52 and 11,867.95 is: 16,377.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,817.56 : 28,727.52 = 11,867.95 : x
  2. Step 2: Convert to fraction form
    20,817.56/28,727.52 = 11,867.95/x
  3. Step 3: Cross multiply
    20,817.56x = 28,727.52 × 11,867.95
  4. Step 4: Simplify right side
    20,817.56x = 340,936,770.98
  5. Step 5: Solve for x
    x = 340,936,770.98/20,817.56
  6. Step 6: Final answer
    x = 16,377.36

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1.5x scale

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.