Home / 21,121,906.38-29,201,537.40-15,606,582.36

Finding the Fourth Proportional to 21,121,906.38, 29,201,537.40 and 15,606,582.36

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Solution

The fourth proportional to 21,121,906.38, 29,201,537.40 and 15,606,582.36 is: 21,576,470.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,121,906.38 : 29,201,537.40 = 15,606,582.36 : x
  2. Step 2: Convert to fraction form
    21,121,906.38/29,201,537.40 = 15,606,582.36/x
  3. Step 3: Cross multiply
    21,121,906.38x = 29,201,537.40 × 15,606,582.36
  4. Step 4: Simplify right side
    21,121,906.38x = 455,736,198,471,720.25
  5. Step 5: Solve for x
    x = 455,736,198,471,720.25/21,121,906.38
  6. Step 6: Final answer
    x = 21,576,470.91

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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.