Home / 12,190,143.28-18,288,260.56-8,602,912.48

Finding the Fourth Proportional to 12,190,143.28, 18,288,260.56 and 8,602,912.48

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Solution

The fourth proportional to 12,190,143.28, 18,288,260.56 and 8,602,912.48 is: 12,906,518.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,190,143.28 : 18,288,260.56 = 8,602,912.48 : x
  2. Step 2: Convert to fraction form
    12,190,143.28/18,288,260.56 = 8,602,912.48/x
  3. Step 3: Cross multiply
    12,190,143.28x = 18,288,260.56 × 8,602,912.48
  4. Step 4: Simplify right side
    12,190,143.28x = 157,332,305,009,115.78
  5. Step 5: Solve for x
    x = 157,332,305,009,115.78/12,190,143.28
  6. Step 6: Final answer
    x = 12,906,518.11

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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.