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Finding the Fourth Proportional to 15,190.78, 22,785.93 and 6,864.97

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Solution

The fourth proportional to 15,190.78, 22,785.93 and 6,864.97 is: 10,297.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,190.78 : 22,785.93 = 6,864.97 : x
  2. Step 2: Convert to fraction form
    15,190.78/22,785.93 = 6,864.97/x
  3. Step 3: Cross multiply
    15,190.78x = 22,785.93 × 6,864.97
  4. Step 4: Simplify right side
    15,190.78x = 156,424,725.87
  5. Step 5: Solve for x
    x = 156,424,725.87/15,190.78
  6. Step 6: Final answer
    x = 10,297.35

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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.