Home / 15,509,308.19-21,403,003.69-8,540,633.78

Finding the Fourth Proportional to 15,509,308.19, 21,403,003.69 and 8,540,633.78

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Solution

The fourth proportional to 15,509,308.19, 21,403,003.69 and 8,540,633.78 is: 11,786,161.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,509,308.19 : 21,403,003.69 = 8,540,633.78 : x
  2. Step 2: Convert to fraction form
    15,509,308.19/21,403,003.69 = 8,540,633.78/x
  3. Step 3: Cross multiply
    15,509,308.19x = 21,403,003.69 × 8,540,633.78
  4. Step 4: Simplify right side
    15,509,308.19x = 182,795,216,179,912.06
  5. Step 5: Solve for x
    x = 182,795,216,179,912.06/15,509,308.19
  6. Step 6: Final answer
    x = 11,786,161.83

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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.