Home / 12,672,209.40-18,970,989.30-11,934,007.80

Finding the Fourth Proportional to 12,672,209.40, 18,970,989.30 and 11,934,007.80

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Solution

The fourth proportional to 12,672,209.40, 18,970,989.30 and 11,934,007.80 is: 17,865,861.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,672,209.40 : 18,970,989.30 = 11,934,007.80 : x
  2. Step 2: Convert to fraction form
    12,672,209.40/18,970,989.30 = 11,934,007.80/x
  3. Step 3: Cross multiply
    12,672,209.40x = 18,970,989.30 × 11,934,007.80
  4. Step 4: Simplify right side
    12,672,209.40x = 226,399,934,279,916.56
  5. Step 5: Solve for x
    x = 226,399,934,279,916.56/12,672,209.40
  6. Step 6: Final answer
    x = 17,865,861.20

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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.