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Finding the Fourth Proportional to 18,722.01, 28,116.47 and 17,969.48

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Solution

The fourth proportional to 18,722.01, 28,116.47 and 17,969.48 is: 26,986.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,722.01 : 28,116.47 = 17,969.48 : x
  2. Step 2: Convert to fraction form
    18,722.01/28,116.47 = 17,969.48/x
  3. Step 3: Cross multiply
    18,722.01x = 28,116.47 × 17,969.48
  4. Step 4: Simplify right side
    18,722.01x = 505,238,345.34
  5. Step 5: Solve for x
    x = 505,238,345.34/18,722.01
  6. Step 6: Final answer
    x = 26,986.33

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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.