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Finding the Fourth Proportional to 17,772.90, 26,659.26 and 16,690.26

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Solution

The fourth proportional to 17,772.90, 26,659.26 and 16,690.26 is: 25,035.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,772.90 : 26,659.26 = 16,690.26 : x
  2. Step 2: Convert to fraction form
    17,772.90/26,659.26 = 16,690.26/x
  3. Step 3: Cross multiply
    17,772.90x = 26,659.26 × 16,690.26
  4. Step 4: Simplify right side
    17,772.90x = 444,949,980.81
  5. Step 5: Solve for x
    x = 444,949,980.81/17,772.90
  6. Step 6: Final answer
    x = 25,035.31

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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.