Home / 21,761,911.38-30,031,437.52-11,972,145.48

Finding the Fourth Proportional to 21,761,911.38, 30,031,437.52 and 11,972,145.48

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Solution

The fourth proportional to 21,761,911.38, 30,031,437.52 and 11,972,145.48 is: 16,521,560.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,761,911.38 : 30,031,437.52 = 11,972,145.48 : x
  2. Step 2: Convert to fraction form
    21,761,911.38/30,031,437.52 = 11,972,145.48/x
  3. Step 3: Cross multiply
    21,761,911.38x = 30,031,437.52 × 11,972,145.48
  4. Step 4: Simplify right side
    21,761,911.38x = 359,540,738,865,317.69
  5. Step 5: Solve for x
    x = 359,540,738,865,317.69/21,761,911.38
  6. Step 6: Final answer
    x = 16,521,560.65

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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.