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Finding the Fourth Proportional to 18,833.94, 28,250.91 and 13,672.62

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Solution

The fourth proportional to 18,833.94, 28,250.91 and 13,672.62 is: 20,508.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,833.94 : 28,250.91 = 13,672.62 : x
  2. Step 2: Convert to fraction form
    18,833.94/28,250.91 = 13,672.62/x
  3. Step 3: Cross multiply
    18,833.94x = 28,250.91 × 13,672.62
  4. Step 4: Simplify right side
    18,833.94x = 386,263,957.08
  5. Step 5: Solve for x
    x = 386,263,957.08/18,833.94
  6. Step 6: Final answer
    x = 20,508.93

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.