Home / 12,889,555.38-17,782,552.09-7,379,985.71

Finding the Fourth Proportional to 12,889,555.38, 17,782,552.09 and 7,379,985.71

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Solution

The fourth proportional to 12,889,555.38, 17,782,552.09 and 7,379,985.71 is: 10,181,497.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,889,555.38 : 17,782,552.09 = 7,379,985.71 : x
  2. Step 2: Convert to fraction form
    12,889,555.38/17,782,552.09 = 7,379,985.71/x
  3. Step 3: Cross multiply
    12,889,555.38x = 17,782,552.09 × 7,379,985.71
  4. Step 4: Simplify right side
    12,889,555.38x = 131,234,980,185,717.95
  5. Step 5: Solve for x
    x = 131,234,980,185,717.95/12,889,555.38
  6. Step 6: Final answer
    x = 10,181,497.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.