Home / 13,122,005.70-18,108,379.22-7,320,788.64

Finding the Fourth Proportional to 13,122,005.70, 18,108,379.22 and 7,320,788.64

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Solution

The fourth proportional to 13,122,005.70, 18,108,379.22 and 7,320,788.64 is: 10,102,694.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,122,005.70 : 18,108,379.22 = 7,320,788.64 : x
  2. Step 2: Convert to fraction form
    13,122,005.70/18,108,379.22 = 7,320,788.64/x
  3. Step 3: Cross multiply
    13,122,005.70x = 18,108,379.22 × 7,320,788.64
  4. Step 4: Simplify right side
    13,122,005.70x = 132,567,616,882,588.05
  5. Step 5: Solve for x
    x = 132,567,616,882,588.05/13,122,005.70
  6. Step 6: Final answer
    x = 10,102,694.66

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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.