Home / 18,914,456.80-28,371,685.20-12,942,488.80

Finding the Fourth Proportional to 18,914,456.80, 28,371,685.20 and 12,942,488.80

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Solution

The fourth proportional to 18,914,456.80, 28,371,685.20 and 12,942,488.80 is: 19,413,733.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,914,456.80 : 28,371,685.20 = 12,942,488.80 : x
  2. Step 2: Convert to fraction form
    18,914,456.80/28,371,685.20 = 12,942,488.80/x
  3. Step 3: Cross multiply
    18,914,456.80x = 28,371,685.20 × 12,942,488.80
  4. Step 4: Simplify right side
    18,914,456.80x = 367,200,217,938,125.75
  5. Step 5: Solve for x
    x = 367,200,217,938,125.75/18,914,456.80
  6. Step 6: Final answer
    x = 19,413,733.20

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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.