Home / 20,856,866.82-28,782,040.41-11,437,521.54

Finding the Fourth Proportional to 20,856,866.82, 28,782,040.41 and 11,437,521.54

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Solution

The fourth proportional to 20,856,866.82, 28,782,040.41 and 11,437,521.54 is: 15,783,540.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,856,866.82 : 28,782,040.41 = 11,437,521.54 : x
  2. Step 2: Convert to fraction form
    20,856,866.82/28,782,040.41 = 11,437,521.54/x
  3. Step 3: Cross multiply
    20,856,866.82x = 28,782,040.41 × 11,437,521.54
  4. Step 4: Simplify right side
    20,856,866.82x = 329,195,207,154,525.44
  5. Step 5: Solve for x
    x = 329,195,207,154,525.44/20,856,866.82
  6. Step 6: Final answer
    x = 15,783,540.74

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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.