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Finding the Fourth Proportional to 17,978,388.09, 26,986,773.04 and 7,748,296.46

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Solution

The fourth proportional to 17,978,388.09, 26,986,773.04 and 7,748,296.46 is: 11,630,715.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,978,388.09 : 26,986,773.04 = 7,748,296.46 : x
  2. Step 2: Convert to fraction form
    17,978,388.09/26,986,773.04 = 7,748,296.46/x
  3. Step 3: Cross multiply
    17,978,388.09x = 26,986,773.04 × 7,748,296.46
  4. Step 4: Simplify right side
    17,978,388.09x = 209,101,517,959,551.25
  5. Step 5: Solve for x
    x = 209,101,517,959,551.25/17,978,388.09
  6. Step 6: Final answer
    x = 11,630,715.55

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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.