Home / 18,743,812.20-28,115,718.30-11,185,540.20

Finding the Fourth Proportional to 18,743,812.20, 28,115,718.30 and 11,185,540.20

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Solution

The fourth proportional to 18,743,812.20, 28,115,718.30 and 11,185,540.20 is: 16,778,310.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,743,812.20 : 28,115,718.30 = 11,185,540.20 : x
  2. Step 2: Convert to fraction form
    18,743,812.20/28,115,718.30 = 11,185,540.20/x
  3. Step 3: Cross multiply
    18,743,812.20x = 28,115,718.30 × 11,185,540.20
  4. Step 4: Simplify right side
    18,743,812.20x = 314,489,497,296,525.62
  5. Step 5: Solve for x
    x = 314,489,497,296,525.62/18,743,812.20
  6. Step 6: Final answer
    x = 16,778,310.30

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1.5x scale

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.