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Finding the Fourth Proportional to 17,958,992.64, 26,938,294.56 and 5,179,084.80

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Solution

The fourth proportional to 17,958,992.64, 26,938,294.56 and 5,179,084.80 is: 7,768,571.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,958,992.64 : 26,938,294.56 = 5,179,084.80 : x
  2. Step 2: Convert to fraction form
    17,958,992.64/26,938,294.56 = 5,179,084.80/x
  3. Step 3: Cross multiply
    17,958,992.64x = 26,938,294.56 × 5,179,084.80
  4. Step 4: Simplify right side
    17,958,992.64x = 139,515,711,893,618.67
  5. Step 5: Solve for x
    x = 139,515,711,893,618.67/17,958,992.64
  6. Step 6: Final answer
    x = 7,768,571.14

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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.