Home / 18,721,766.55-28,032,187.49-12,228,763.12

Finding the Fourth Proportional to 18,721,766.55, 28,032,187.49 and 12,228,763.12

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Solution

The fourth proportional to 18,721,766.55, 28,032,187.49 and 12,228,763.12 is: 18,310,183.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721,766.55 : 28,032,187.49 = 12,228,763.12 : x
  2. Step 2: Convert to fraction form
    18,721,766.55/28,032,187.49 = 12,228,763.12/x
  3. Step 3: Cross multiply
    18,721,766.55x = 28,032,187.49 × 12,228,763.12
  4. Step 4: Simplify right side
    18,721,766.55x = 342,798,980,465,270.94
  5. Step 5: Solve for x
    x = 342,798,980,465,270.94/18,721,766.55
  6. Step 6: Final answer
    x = 18,310,183.47

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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.