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Finding the Fourth Proportional to 18,301.96, 25,256.68 and 9,918.46

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Solution

The fourth proportional to 18,301.96, 25,256.68 and 9,918.46 is: 13,687.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,301.96 : 25,256.68 = 9,918.46 : x
  2. Step 2: Convert to fraction form
    18,301.96/25,256.68 = 9,918.46/x
  3. Step 3: Cross multiply
    18,301.96x = 25,256.68 × 9,918.46
  4. Step 4: Simplify right side
    18,301.96x = 250,507,370.31
  5. Step 5: Solve for x
    x = 250,507,370.31/18,301.96
  6. Step 6: Final answer
    x = 13,687.46

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.