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Finding the Fourth Proportional to 20,522,805.17, 30,784,995.07 and 9,163,352.21

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Solution

The fourth proportional to 20,522,805.17, 30,784,995.07 and 9,163,352.21 is: 13,745,379.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,522,805.17 : 30,784,995.07 = 9,163,352.21 : x
  2. Step 2: Convert to fraction form
    20,522,805.17/30,784,995.07 = 9,163,352.21/x
  3. Step 3: Cross multiply
    20,522,805.17x = 30,784,995.07 × 9,163,352.21
  4. Step 4: Simplify right side
    20,522,805.17x = 282,093,752,432,690.25
  5. Step 5: Solve for x
    x = 282,093,752,432,690.25/20,522,805.17
  6. Step 6: Final answer
    x = 13,745,379.84

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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.