Home / 18,120,989.11-25,006,968.68-9,972,227.11

Finding the Fourth Proportional to 18,120,989.11, 25,006,968.68 and 9,972,227.11

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Solution

The fourth proportional to 18,120,989.11, 25,006,968.68 and 9,972,227.11 is: 13,761,675.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,120,989.11 : 25,006,968.68 = 9,972,227.11 : x
  2. Step 2: Convert to fraction form
    18,120,989.11/25,006,968.68 = 9,972,227.11/x
  3. Step 3: Cross multiply
    18,120,989.11x = 25,006,968.68 × 9,972,227.11
  4. Step 4: Simplify right side
    18,120,989.11x = 249,375,171,022,273.22
  5. Step 5: Solve for x
    x = 249,375,171,022,273.22/18,120,989.11
  6. Step 6: Final answer
    x = 13,761,675.45

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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.