Home / 20,538,414.72-28,344,913.74-11,371,057.56

Finding the Fourth Proportional to 20,538,414.72, 28,344,913.74 and 11,371,057.56

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Solution

The fourth proportional to 20,538,414.72, 28,344,913.74 and 11,371,057.56 is: 15,693,112.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,538,414.72 : 28,344,913.74 = 11,371,057.56 : x
  2. Step 2: Convert to fraction form
    20,538,414.72/28,344,913.74 = 11,371,057.56/x
  3. Step 3: Cross multiply
    20,538,414.72x = 28,344,913.74 × 11,371,057.56
  4. Step 4: Simplify right side
    20,538,414.72x = 322,311,645,670,774.88
  5. Step 5: Solve for x
    x = 322,311,645,670,774.88/20,538,414.72
  6. Step 6: Final answer
    x = 15,693,112.15

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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.