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Finding the Fourth Proportional to 13,461.80, 18,576.61 and 7,493.99

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Solution

The fourth proportional to 13,461.80, 18,576.61 and 7,493.99 is: 10,341.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,461.80 : 18,576.61 = 7,493.99 : x
  2. Step 2: Convert to fraction form
    13,461.80/18,576.61 = 7,493.99/x
  3. Step 3: Cross multiply
    13,461.80x = 18,576.61 × 7,493.99
  4. Step 4: Simplify right side
    13,461.80x = 139,212,817.96
  5. Step 5: Solve for x
    x = 139,212,817.96/13,461.80
  6. Step 6: Final answer
    x = 10,341.33

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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.