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Finding the Fourth Proportional to 13,398,755.60, 20,106,006.60 and 4,879,953.20

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Solution

The fourth proportional to 13,398,755.60, 20,106,006.60 and 4,879,953.20 is: 7,322,797.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,398,755.60 : 20,106,006.60 = 4,879,953.20 : x
  2. Step 2: Convert to fraction form
    13,398,755.60/20,106,006.60 = 4,879,953.20/x
  3. Step 3: Cross multiply
    13,398,755.60x = 20,106,006.60 × 4,879,953.20
  4. Step 4: Simplify right side
    13,398,755.60x = 98,116,371,246,891.12
  5. Step 5: Solve for x
    x = 98,116,371,246,891.12/13,398,755.60
  6. Step 6: Final answer
    x = 7,322,797.29

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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.