Home / 13,121,239.89-18,107,318.76-7,320,021.64

Finding the Fourth Proportional to 13,121,239.89, 18,107,318.76 and 7,320,021.64

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Solution

The fourth proportional to 13,121,239.89, 18,107,318.76 and 7,320,021.64 is: 10,101,634.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121,239.89 : 18,107,318.76 = 7,320,021.64 : x
  2. Step 2: Convert to fraction form
    13,121,239.89/18,107,318.76 = 7,320,021.64/x
  3. Step 3: Cross multiply
    13,121,239.89x = 18,107,318.76 × 7,320,021.64
  4. Step 4: Simplify right side
    13,121,239.89x = 132,545,965,165,577.97
  5. Step 5: Solve for x
    x = 132,545,965,165,577.97/13,121,239.89
  6. Step 6: Final answer
    x = 10,101,634.17

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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.