Home / 11,921,795.20-17,872,661.76-5,185,135.36

Finding the Fourth Proportional to 11,921,795.20, 17,872,661.76 and 5,185,135.36

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Solution

The fourth proportional to 11,921,795.20, 17,872,661.76 and 5,185,135.36 is: 7,773,340.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921,795.20 : 17,872,661.76 = 5,185,135.36 : x
  2. Step 2: Convert to fraction form
    11,921,795.20/17,872,661.76 = 5,185,135.36/x
  3. Step 3: Cross multiply
    11,921,795.20x = 17,872,661.76 × 5,185,135.36
  4. Step 4: Simplify right side
    11,921,795.20x = 92,672,170,469,095.84
  5. Step 5: Solve for x
    x = 92,672,170,469,095.84/11,921,795.20
  6. Step 6: Final answer
    x = 7,773,340.25

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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.