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Finding the Fourth Proportional to 13,345.53, 18,416.56 and 7,377.45

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Solution

The fourth proportional to 13,345.53, 18,416.56 and 7,377.45 is: 10,180.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,345.53 : 18,416.56 = 7,377.45 : x
  2. Step 2: Convert to fraction form
    13,345.53/18,416.56 = 7,377.45/x
  3. Step 3: Cross multiply
    13,345.53x = 18,416.56 × 7,377.45
  4. Step 4: Simplify right side
    13,345.53x = 135,867,250.57
  5. Step 5: Solve for x
    x = 135,867,250.57/13,345.53
  6. Step 6: Final answer
    x = 10,180.73

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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.