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Finding the Fourth Proportional to 13,673.88, 18,869.96 and 7,386.25

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Solution

The fourth proportional to 13,673.88, 18,869.96 and 7,386.25 is: 10,193.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,673.88 : 18,869.96 = 7,386.25 : x
  2. Step 2: Convert to fraction form
    13,673.88/18,869.96 = 7,386.25/x
  3. Step 3: Cross multiply
    13,673.88x = 18,869.96 × 7,386.25
  4. Step 4: Simplify right side
    13,673.88x = 139,378,242.05
  5. Step 5: Solve for x
    x = 139,378,242.05/13,673.88
  6. Step 6: Final answer
    x = 10,193.03

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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.