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Finding the Fourth Proportional to 17,990.06, 26,978.60 and 7,602.62

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Solution

The fourth proportional to 17,990.06, 26,978.60 and 7,602.62 is: 11,401.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,990.06 : 26,978.60 = 7,602.62 : x
  2. Step 2: Convert to fraction form
    17,990.06/26,978.60 = 7,602.62/x
  3. Step 3: Cross multiply
    17,990.06x = 26,978.60 × 7,602.62
  4. Step 4: Simplify right side
    17,990.06x = 205,107,928.05
  5. Step 5: Solve for x
    x = 205,107,928.05/17,990.06
  6. Step 6: Final answer
    x = 11,401.18

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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.