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Finding the Fourth Proportional to 21,783,706.80, 32,625,793.80 and 12,825,754.80

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Solution

The fourth proportional to 21,783,706.80, 32,625,793.80 and 12,825,754.80 is: 19,209,330.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,783,706.80 : 32,625,793.80 = 12,825,754.80 : x
  2. Step 2: Convert to fraction form
    21,783,706.80/32,625,793.80 = 12,825,754.80/x
  3. Step 3: Cross multiply
    21,783,706.80x = 32,625,793.80 × 12,825,754.80
  4. Step 4: Simplify right side
    21,783,706.80x = 418,450,431,434,160.25
  5. Step 5: Solve for x
    x = 418,450,431,434,160.25/21,783,706.80
  6. Step 6: Final answer
    x = 19,209,330.87

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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.