Home / 18,120,990.86-25,006,971.09-9,972,228.86

Finding the Fourth Proportional to 18,120,990.86, 25,006,971.09 and 9,972,228.86

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Solution

The fourth proportional to 18,120,990.86, 25,006,971.09 and 9,972,228.86 is: 13,761,677.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,120,990.86 : 25,006,971.09 = 9,972,228.86 : x
  2. Step 2: Convert to fraction form
    18,120,990.86/25,006,971.09 = 9,972,228.86/x
  3. Step 3: Cross multiply
    18,120,990.86x = 25,006,971.09 × 9,972,228.86
  4. Step 4: Simplify right side
    18,120,990.86x = 249,375,238,804,883.66
  5. Step 5: Solve for x
    x = 249,375,238,804,883.66/18,120,990.86
  6. Step 6: Final answer
    x = 13,761,677.86

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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.