Home / 12,252,607.20-18,378,910.80-7,969,586.40

Finding the Fourth Proportional to 12,252,607.20, 18,378,910.80 and 7,969,586.40

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Solution

The fourth proportional to 12,252,607.20, 18,378,910.80 and 7,969,586.40 is: 11,954,379.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,252,607.20 : 18,378,910.80 = 7,969,586.40 : x
  2. Step 2: Convert to fraction form
    12,252,607.20/18,378,910.80 = 7,969,586.40/x
  3. Step 3: Cross multiply
    12,252,607.20x = 18,378,910.80 × 7,969,586.40
  4. Step 4: Simplify right side
    12,252,607.20x = 146,472,317,558,493.12
  5. Step 5: Solve for x
    x = 146,472,317,558,493.12/12,252,607.20
  6. Step 6: Final answer
    x = 11,954,379.60

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Similar ratio
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1.5x scale

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.