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Finding the Fourth Proportional to 13,842,676.90, 20,764,015.35 and 8,169,307.30

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Solution

The fourth proportional to 13,842,676.90, 20,764,015.35 and 8,169,307.30 is: 12,253,960.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,842,676.90 : 20,764,015.35 = 8,169,307.30 : x
  2. Step 2: Convert to fraction form
    13,842,676.90/20,764,015.35 = 8,169,307.30/x
  3. Step 3: Cross multiply
    13,842,676.90x = 20,764,015.35 × 8,169,307.30
  4. Step 4: Simplify right side
    13,842,676.90x = 169,627,622,176,067.06
  5. Step 5: Solve for x
    x = 169,627,622,176,067.06/13,842,676.90
  6. Step 6: Final answer
    x = 12,253,960.95

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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.