Home / 18,888,740.70-28,333,111.05-12,086,295.90

Finding the Fourth Proportional to 18,888,740.70, 28,333,111.05 and 12,086,295.90

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Solution

The fourth proportional to 18,888,740.70, 28,333,111.05 and 12,086,295.90 is: 18,129,443.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,888,740.70 : 28,333,111.05 = 12,086,295.90 : x
  2. Step 2: Convert to fraction form
    18,888,740.70/28,333,111.05 = 12,086,295.90/x
  3. Step 3: Cross multiply
    18,888,740.70x = 28,333,111.05 × 12,086,295.90
  4. Step 4: Simplify right side
    18,888,740.70x = 342,442,363,917,859.69
  5. Step 5: Solve for x
    x = 342,442,363,917,859.69/18,888,740.70
  6. Step 6: Final answer
    x = 18,129,443.85

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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.