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Finding the Fourth Proportional to 23,116.40, 31,892.04 and 15,163.04

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Solution

The fourth proportional to 23,116.40, 31,892.04 and 15,163.04 is: 20,919.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,116.40 : 31,892.04 = 15,163.04 : x
  2. Step 2: Convert to fraction form
    23,116.40/31,892.04 = 15,163.04/x
  3. Step 3: Cross multiply
    23,116.40x = 31,892.04 × 15,163.04
  4. Step 4: Simplify right side
    23,116.40x = 483,580,278.20
  5. Step 5: Solve for x
    x = 483,580,278.20/23,116.40
  6. Step 6: Final answer
    x = 20,919.36

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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.