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Finding the Fourth Proportional to 19,211.92, 28,817.88 and 7,523.68

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Solution

The fourth proportional to 19,211.92, 28,817.88 and 7,523.68 is: 11,285.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,211.92 : 28,817.88 = 7,523.68 : x
  2. Step 2: Convert to fraction form
    19,211.92/28,817.88 = 7,523.68/x
  3. Step 3: Cross multiply
    19,211.92x = 28,817.88 × 7,523.68
  4. Step 4: Simplify right side
    19,211.92x = 216,816,507.40
  5. Step 5: Solve for x
    x = 216,816,507.40/19,211.92
  6. Step 6: Final answer
    x = 11,285.52

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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.