Home / 12,379,780.80-18,569,671.20-9,545,428.80

Finding the Fourth Proportional to 12,379,780.80, 18,569,671.20 and 9,545,428.80

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Solution

The fourth proportional to 12,379,780.80, 18,569,671.20 and 9,545,428.80 is: 14,318,143.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,379,780.80 : 18,569,671.20 = 9,545,428.80 : x
  2. Step 2: Convert to fraction form
    12,379,780.80/18,569,671.20 = 9,545,428.80/x
  3. Step 3: Cross multiply
    12,379,780.80x = 18,569,671.20 × 9,545,428.80
  4. Step 4: Simplify right side
    12,379,780.80x = 177,255,474,279,010.56
  5. Step 5: Solve for x
    x = 177,255,474,279,010.56/12,379,780.80
  6. Step 6: Final answer
    x = 14,318,143.20

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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.