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Finding the Fourth Proportional to 20,996,841.64, 31,483,865.36 and 9,468,820.68

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Solution

The fourth proportional to 20,996,841.64, 31,483,865.36 and 9,468,820.68 is: 14,198,091.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,996,841.64 : 31,483,865.36 = 9,468,820.68 : x
  2. Step 2: Convert to fraction form
    20,996,841.64/31,483,865.36 = 9,468,820.68/x
  3. Step 3: Cross multiply
    20,996,841.64x = 31,483,865.36 × 9,468,820.68
  4. Step 4: Simplify right side
    20,996,841.64x = 298,115,075,407,103.62
  5. Step 5: Solve for x
    x = 298,115,075,407,103.62/20,996,841.64
  6. Step 6: Final answer
    x = 14,198,091.34

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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.