Home / 18,989,420.92-28,484,131.71-4,612,391.82

Finding the Fourth Proportional to 18,989,420.92, 28,484,131.71 and 4,612,391.82

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Solution

The fourth proportional to 18,989,420.92, 28,484,131.71 and 4,612,391.82 is: 6,918,587.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,989,420.92 : 28,484,131.71 = 4,612,391.82 : x
  2. Step 2: Convert to fraction form
    18,989,420.92/28,484,131.71 = 4,612,391.82/x
  3. Step 3: Cross multiply
    18,989,420.92x = 28,484,131.71 × 4,612,391.82
  4. Step 4: Simplify right side
    18,989,420.92x = 131,379,976,099,006.62
  5. Step 5: Solve for x
    x = 131,379,976,099,006.62/18,989,420.92
  6. Step 6: Final answer
    x = 6,918,587.81

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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.