Home / 20,815,606.40-28,725,876.96-11,396,240.32

Finding the Fourth Proportional to 20,815,606.40, 28,725,876.96 and 11,396,240.32

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Solution

The fourth proportional to 20,815,606.40, 28,725,876.96 and 11,396,240.32 is: 15,726,997.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,815,606.40 : 28,725,876.96 = 11,396,240.32 : x
  2. Step 2: Convert to fraction form
    20,815,606.40/28,725,876.96 = 11,396,240.32/x
  3. Step 3: Cross multiply
    20,815,606.40x = 28,725,876.96 × 11,396,240.32
  4. Step 4: Simplify right side
    20,815,606.40x = 327,366,997,238,911.06
  5. Step 5: Solve for x
    x = 327,366,997,238,911.06/20,815,606.40
  6. Step 6: Final answer
    x = 15,726,997.86

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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.