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Finding the Fourth Proportional to 18,805.91, 28,200.02 and 6,951.49

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Solution

The fourth proportional to 18,805.91, 28,200.02 and 6,951.49 is: 10,423.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,805.91 : 28,200.02 = 6,951.49 : x
  2. Step 2: Convert to fraction form
    18,805.91/28,200.02 = 6,951.49/x
  3. Step 3: Cross multiply
    18,805.91x = 28,200.02 × 6,951.49
  4. Step 4: Simplify right side
    18,805.91x = 196,032,051.77
  5. Step 5: Solve for x
    x = 196,032,051.77/18,805.91
  6. Step 6: Final answer
    x = 10,423.96

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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.