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Finding the Fourth Proportional to 19,115.52, 28,680.54 and 10,804.92

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Solution

The fourth proportional to 19,115.52, 28,680.54 and 10,804.92 is: 16,211.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,115.52 : 28,680.54 = 10,804.92 : x
  2. Step 2: Convert to fraction form
    19,115.52/28,680.54 = 10,804.92/x
  3. Step 3: Cross multiply
    19,115.52x = 28,680.54 × 10,804.92
  4. Step 4: Simplify right side
    19,115.52x = 309,890,940.26
  5. Step 5: Solve for x
    x = 309,890,940.26/19,115.52
  6. Step 6: Final answer
    x = 16,211.48

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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.