Home / 12,792.10-19,144.80-7,864.86

Finding the Fourth Proportional to 12,792.10, 19,144.80 and 7,864.86

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Solution

The fourth proportional to 12,792.10, 19,144.80 and 7,864.86 is: 11,770.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,792.10 : 19,144.80 = 7,864.86 : x
  2. Step 2: Convert to fraction form
    12,792.10/19,144.80 = 7,864.86/x
  3. Step 3: Cross multiply
    12,792.10x = 19,144.80 × 7,864.86
  4. Step 4: Simplify right side
    12,792.10x = 150,571,171.73
  5. Step 5: Solve for x
    x = 150,571,171.73/12,792.10
  6. Step 6: Final answer
    x = 11,770.64

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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.