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Finding the Fourth Proportional to 27,978.93, 41,967.05 and 6,918.89

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Solution

The fourth proportional to 27,978.93, 41,967.05 and 6,918.89 is: 10,378.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,978.93 : 41,967.05 = 6,918.89 : x
  2. Step 2: Convert to fraction form
    27,978.93/41,967.05 = 6,918.89/x
  3. Step 3: Cross multiply
    27,978.93x = 41,967.05 × 6,918.89
  4. Step 4: Simplify right side
    27,978.93x = 290,365,402.57
  5. Step 5: Solve for x
    x = 290,365,402.57/27,978.93
  6. Step 6: Final answer
    x = 10,378.00

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.