Home / 18,120,945.76-25,006,908.78-9,972,183.76

Finding the Fourth Proportional to 18,120,945.76, 25,006,908.78 and 9,972,183.76

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Solution

The fourth proportional to 18,120,945.76, 25,006,908.78 and 9,972,183.76 is: 13,761,615.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,120,945.76 : 25,006,908.78 = 9,972,183.76 : x
  2. Step 2: Convert to fraction form
    18,120,945.76/25,006,908.78 = 9,972,183.76/x
  3. Step 3: Cross multiply
    18,120,945.76x = 25,006,908.78 × 9,972,183.76
  4. Step 4: Simplify right side
    18,120,945.76x = 249,373,489,623,717.41
  5. Step 5: Solve for x
    x = 249,373,489,623,717.41/18,120,945.76
  6. Step 6: Final answer
    x = 13,761,615.59

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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.