Home / 18,721,766.30-28,032,187.13-12,228,762.86

Finding the Fourth Proportional to 18,721,766.30, 28,032,187.13 and 12,228,762.86

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Solution

The fourth proportional to 18,721,766.30, 28,032,187.13 and 12,228,762.86 is: 18,310,183.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721,766.30 : 28,032,187.13 = 12,228,762.86 : x
  2. Step 2: Convert to fraction form
    18,721,766.30/28,032,187.13 = 12,228,762.86/x
  3. Step 3: Cross multiply
    18,721,766.30x = 28,032,187.13 × 12,228,762.86
  4. Step 4: Simplify right side
    18,721,766.30x = 342,798,968,798,770.19
  5. Step 5: Solve for x
    x = 342,798,968,798,770.19/18,721,766.30
  6. Step 6: Final answer
    x = 18,310,183.09

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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.