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Finding the Fourth Proportional to 13,410.99, 18,508.32 and 7,443.81

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Solution

The fourth proportional to 13,410.99, 18,508.32 and 7,443.81 is: 10,273.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,410.99 : 18,508.32 = 7,443.81 : x
  2. Step 2: Convert to fraction form
    13,410.99/18,508.32 = 7,443.81/x
  3. Step 3: Cross multiply
    13,410.99x = 18,508.32 × 7,443.81
  4. Step 4: Simplify right side
    13,410.99x = 137,772,417.50
  5. Step 5: Solve for x
    x = 137,772,417.50/13,410.99
  6. Step 6: Final answer
    x = 10,273.10

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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.