Home / 20,990,913.20-31,500,366.60-9,625,511.60

Finding the Fourth Proportional to 20,990,913.20, 31,500,366.60 and 9,625,511.60

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Solution

The fourth proportional to 20,990,913.20, 31,500,366.60 and 9,625,511.60 is: 14,444,685.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,990,913.20 : 31,500,366.60 = 9,625,511.60 : x
  2. Step 2: Convert to fraction form
    20,990,913.20/31,500,366.60 = 9,625,511.60/x
  3. Step 3: Cross multiply
    20,990,913.20x = 31,500,366.60 × 9,625,511.60
  4. Step 4: Simplify right side
    20,990,913.20x = 303,207,144,112,552.56
  5. Step 5: Solve for x
    x = 303,207,144,112,552.56/20,990,913.20
  6. Step 6: Final answer
    x = 14,444,685.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.