Home / 20,729,462.72-28,606,757.92-11,437,032.32

Finding the Fourth Proportional to 20,729,462.72, 28,606,757.92 and 11,437,032.32

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Solution

The fourth proportional to 20,729,462.72, 28,606,757.92 and 11,437,032.32 is: 15,783,159.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,729,462.72 : 28,606,757.92 = 11,437,032.32 : x
  2. Step 2: Convert to fraction form
    20,729,462.72/28,606,757.92 = 11,437,032.32/x
  3. Step 3: Cross multiply
    20,729,462.72x = 28,606,757.92 × 11,437,032.32
  4. Step 4: Simplify right side
    20,729,462.72x = 327,176,414,901,456
  5. Step 5: Solve for x
    x = 327,176,414,901,456/20,729,462.72
  6. Step 6: Final answer
    x = 15,783,159.42

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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.