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Finding the Fourth Proportional to 13,321.99, 18,384.27 and 7,353.66

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Solution

The fourth proportional to 13,321.99, 18,384.27 and 7,353.66 is: 10,148.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,321.99 : 18,384.27 = 7,353.66 : x
  2. Step 2: Convert to fraction form
    13,321.99/18,384.27 = 7,353.66/x
  3. Step 3: Cross multiply
    13,321.99x = 18,384.27 × 7,353.66
  4. Step 4: Simplify right side
    13,321.99x = 135,191,660.59
  5. Step 5: Solve for x
    x = 135,191,660.59/13,321.99
  6. Step 6: Final answer
    x = 10,148.00

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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.