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Finding the Fourth Proportional to 12,809,670.09, 17,675,598.91 and 7,651,936.77

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Solution

The fourth proportional to 12,809,670.09, 17,675,598.91 and 7,651,936.77 is: 10,558,629.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,809,670.09 : 17,675,598.91 = 7,651,936.77 : x
  2. Step 2: Convert to fraction form
    12,809,670.09/17,675,598.91 = 7,651,936.77/x
  3. Step 3: Cross multiply
    12,809,670.09x = 17,675,598.91 × 7,651,936.77
  4. Step 4: Simplify right side
    12,809,670.09x = 135,252,565,231,200.91
  5. Step 5: Solve for x
    x = 135,252,565,231,200.91/12,809,670.09
  6. Step 6: Final answer
    x = 10,558,629.87

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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.