Home / 12,243,403.20-18,344,109.60-7,981,377.60

Finding the Fourth Proportional to 12,243,403.20, 18,344,109.60 and 7,981,377.60

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Solution

The fourth proportional to 12,243,403.20, 18,344,109.60 and 7,981,377.60 is: 11,958,379.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,243,403.20 : 18,344,109.60 = 7,981,377.60 : x
  2. Step 2: Convert to fraction form
    12,243,403.20/18,344,109.60 = 7,981,377.60/x
  3. Step 3: Cross multiply
    12,243,403.20x = 18,344,109.60 × 7,981,377.60
  4. Step 4: Simplify right side
    12,243,403.20x = 146,411,265,453,384.97
  5. Step 5: Solve for x
    x = 146,411,265,453,384.97/12,243,403.20
  6. Step 6: Final answer
    x = 11,958,379.80

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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.