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Finding the Fourth Proportional to 13,073.72, 18,041.85 and 7,105.40

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Solution

The fourth proportional to 13,073.72, 18,041.85 and 7,105.40 is: 9,805.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,073.72 : 18,041.85 = 7,105.40 : x
  2. Step 2: Convert to fraction form
    13,073.72/18,041.85 = 7,105.40/x
  3. Step 3: Cross multiply
    13,073.72x = 18,041.85 × 7,105.40
  4. Step 4: Simplify right side
    13,073.72x = 128,194,480.36
  5. Step 5: Solve for x
    x = 128,194,480.36/13,073.72
  6. Step 6: Final answer
    x = 9,805.51

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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.