Home / 13,279,812.90-18,325,892.94-8,122,795.62

Finding the Fourth Proportional to 13,279,812.90, 18,325,892.94 and 8,122,795.62

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Solution

The fourth proportional to 13,279,812.90, 18,325,892.94 and 8,122,795.62 is: 11,209,305.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,279,812.90 : 18,325,892.94 = 8,122,795.62 : x
  2. Step 2: Convert to fraction form
    13,279,812.90/18,325,892.94 = 8,122,795.62/x
  3. Step 3: Cross multiply
    13,279,812.90x = 18,325,892.94 × 8,122,795.62
  4. Step 4: Simplify right side
    13,279,812.90x = 148,857,482,905,620.94
  5. Step 5: Solve for x
    x = 148,857,482,905,620.94/13,279,812.90
  6. Step 6: Final answer
    x = 11,209,305.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.