Home / 20,749,972.30-31,135,730.04-8,462,949.86

Finding the Fourth Proportional to 20,749,972.30, 31,135,730.04 and 8,462,949.86

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Solution

The fourth proportional to 20,749,972.30, 31,135,730.04 and 8,462,949.86 is: 12,698,818.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,749,972.30 : 31,135,730.04 = 8,462,949.86 : x
  2. Step 2: Convert to fraction form
    20,749,972.30/31,135,730.04 = 8,462,949.86/x
  3. Step 3: Cross multiply
    20,749,972.30x = 31,135,730.04 × 8,462,949.86
  4. Step 4: Simplify right side
    20,749,972.30x = 263,500,122,260,855.12
  5. Step 5: Solve for x
    x = 263,500,122,260,855.12/20,749,972.30
  6. Step 6: Final answer
    x = 12,698,818.03

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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.