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Finding the Fourth Proportional to 19,211.52, 28,801.92 and 7,522.56

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Solution

The fourth proportional to 19,211.52, 28,801.92 and 7,522.56 is: 11,277.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,211.52 : 28,801.92 = 7,522.56 : x
  2. Step 2: Convert to fraction form
    19,211.52/28,801.92 = 7,522.56/x
  3. Step 3: Cross multiply
    19,211.52x = 28,801.92 × 7,522.56
  4. Step 4: Simplify right side
    19,211.52x = 216,664,171.32
  5. Step 5: Solve for x
    x = 216,664,171.32/19,211.52
  6. Step 6: Final answer
    x = 11,277.83

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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.