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Finding the Fourth Proportional to 11,957.92, 17,917.06 and 8,430.73

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Solution

The fourth proportional to 11,957.92, 17,917.06 and 8,430.73 is: 12,632.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,957.92 : 17,917.06 = 8,430.73 : x
  2. Step 2: Convert to fraction form
    11,957.92/17,917.06 = 8,430.73/x
  3. Step 3: Cross multiply
    11,957.92x = 17,917.06 × 8,430.73
  4. Step 4: Simplify right side
    11,957.92x = 151,053,829.38
  5. Step 5: Solve for x
    x = 151,053,829.38/11,957.92
  6. Step 6: Final answer
    x = 12,632.12

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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.