Home / 18,990,013.82-28,450,772.28-11,690,770.10

Finding the Fourth Proportional to 18,990,013.82, 28,450,772.28 and 11,690,770.10

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Solution

The fourth proportional to 18,990,013.82, 28,450,772.28 and 11,690,770.10 is: 17,515,070.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,990,013.82 : 28,450,772.28 = 11,690,770.10 : x
  2. Step 2: Convert to fraction form
    18,990,013.82/28,450,772.28 = 11,690,770.10/x
  3. Step 3: Cross multiply
    18,990,013.82x = 28,450,772.28 × 11,690,770.10
  4. Step 4: Simplify right side
    18,990,013.82x = 332,611,437,750,679
  5. Step 5: Solve for x
    x = 332,611,437,750,679/18,990,013.82
  6. Step 6: Final answer
    x = 17,515,070.87

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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.