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Finding the Fourth Proportional to 13,763.13, 18,993.02 and 7,475.55

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Solution

The fourth proportional to 13,763.13, 18,993.02 and 7,475.55 is: 10,316.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,763.13 : 18,993.02 = 7,475.55 : x
  2. Step 2: Convert to fraction form
    13,763.13/18,993.02 = 7,475.55/x
  3. Step 3: Cross multiply
    13,763.13x = 18,993.02 × 7,475.55
  4. Step 4: Simplify right side
    13,763.13x = 141,983,233.28
  5. Step 5: Solve for x
    x = 141,983,233.28/13,763.13
  6. Step 6: Final answer
    x = 10,316.20

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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.