Home / 20,915,891.16-28,859,200.74-12,655,747.95

Finding the Fourth Proportional to 20,915,891.16, 28,859,200.74 and 12,655,747.95

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Solution

The fourth proportional to 20,915,891.16, 28,859,200.74 and 12,655,747.95 is: 17,462,070.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,915,891.16 : 28,859,200.74 = 12,655,747.95 : x
  2. Step 2: Convert to fraction form
    20,915,891.16/28,859,200.74 = 12,655,747.95/x
  3. Step 3: Cross multiply
    20,915,891.16x = 28,859,200.74 × 12,655,747.95
  4. Step 4: Simplify right side
    20,915,891.16x = 365,234,770,603,893.44
  5. Step 5: Solve for x
    x = 365,234,770,603,893.44/20,915,891.16
  6. Step 6: Final answer
    x = 17,462,070.72

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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.