Home / 20,689,879.20-28,552,919.09-11,522,521.95

Finding the Fourth Proportional to 20,689,879.20, 28,552,919.09 and 11,522,521.95

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Solution

The fourth proportional to 20,689,879.20, 28,552,919.09 and 11,522,521.95 is: 15,901,573.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,689,879.20 : 28,552,919.09 = 11,522,521.95 : x
  2. Step 2: Convert to fraction form
    20,689,879.20/28,552,919.09 = 11,522,521.95/x
  3. Step 3: Cross multiply
    20,689,879.20x = 28,552,919.09 × 11,522,521.95
  4. Step 4: Simplify right side
    20,689,879.20x = 329,001,636,893,486.38
  5. Step 5: Solve for x
    x = 329,001,636,893,486.38/20,689,879.20
  6. Step 6: Final answer
    x = 15,901,573.60

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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.