Home / 18,901,830.40-28,334,083.20-9,309,356.80

Finding the Fourth Proportional to 18,901,830.40, 28,334,083.20 and 9,309,356.80

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Solution

The fourth proportional to 18,901,830.40, 28,334,083.20 and 9,309,356.80 is: 13,954,843.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,901,830.40 : 28,334,083.20 = 9,309,356.80 : x
  2. Step 2: Convert to fraction form
    18,901,830.40/28,334,083.20 = 9,309,356.80/x
  3. Step 3: Cross multiply
    18,901,830.40x = 28,334,083.20 × 9,309,356.80
  4. Step 4: Simplify right side
    18,901,830.40x = 263,772,090,109,685.78
  5. Step 5: Solve for x
    x = 263,772,090,109,685.78/18,901,830.40
  6. Step 6: Final answer
    x = 13,954,843.77

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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.