Home / 13,729,661.49-18,945,680.54-8,146,945.88

Finding the Fourth Proportional to 13,729,661.49, 18,945,680.54 and 8,146,945.88

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Solution

The fourth proportional to 13,729,661.49, 18,945,680.54 and 8,146,945.88 is: 11,242,042.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,729,661.49 : 18,945,680.54 = 8,146,945.88 : x
  2. Step 2: Convert to fraction form
    13,729,661.49/18,945,680.54 = 8,146,945.88/x
  3. Step 3: Cross multiply
    13,729,661.49x = 18,945,680.54 × 8,146,945.88
  4. Step 4: Simplify right side
    13,729,661.49x = 154,349,433,954,732.34
  5. Step 5: Solve for x
    x = 154,349,433,954,732.34/13,729,661.49
  6. Step 6: Final answer
    x = 11,242,042.20

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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.