Home / 12,108,311.80-18,172,961.40-6,355,109.32

Finding the Fourth Proportional to 12,108,311.80, 18,172,961.40 and 6,355,109.32

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Solution

The fourth proportional to 12,108,311.80, 18,172,961.40 and 6,355,109.32 is: 9,538,171.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,108,311.80 : 18,172,961.40 = 6,355,109.32 : x
  2. Step 2: Convert to fraction form
    12,108,311.80/18,172,961.40 = 6,355,109.32/x
  3. Step 3: Cross multiply
    12,108,311.80x = 18,172,961.40 × 6,355,109.32
  4. Step 4: Simplify right side
    12,108,311.80x = 115,491,156,365,140.25
  5. Step 5: Solve for x
    x = 115,491,156,365,140.25/12,108,311.80
  6. Step 6: Final answer
    x = 9,538,171.65

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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.