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Finding the Fourth Proportional to 15,175.23, 20,942.08 and 8,370.04

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Solution

The fourth proportional to 15,175.23, 20,942.08 and 8,370.04 is: 11,550.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,175.23 : 20,942.08 = 8,370.04 : x
  2. Step 2: Convert to fraction form
    15,175.23/20,942.08 = 8,370.04/x
  3. Step 3: Cross multiply
    15,175.23x = 20,942.08 × 8,370.04
  4. Step 4: Simplify right side
    15,175.23x = 175,285,963.91
  5. Step 5: Solve for x
    x = 175,285,963.91/15,175.23
  6. Step 6: Final answer
    x = 11,550.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.