Home / 20,639,712.69-28,482,821.72-11,347,440.85

Finding the Fourth Proportional to 20,639,712.69, 28,482,821.72 and 11,347,440.85

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Solution

The fourth proportional to 20,639,712.69, 28,482,821.72 and 11,347,440.85 is: 15,659,478.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,639,712.69 : 28,482,821.72 = 11,347,440.85 : x
  2. Step 2: Convert to fraction form
    20,639,712.69/28,482,821.72 = 11,347,440.85/x
  3. Step 3: Cross multiply
    20,639,712.69x = 28,482,821.72 × 11,347,440.85
  4. Step 4: Simplify right side
    20,639,712.69x = 323,207,134,796,855.25
  5. Step 5: Solve for x
    x = 323,207,134,796,855.25/20,639,712.69
  6. Step 6: Final answer
    x = 15,659,478.39

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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.