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Finding the Fourth Proportional to 13,606.02, 18,776.27 and 7,638.26

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Solution

The fourth proportional to 13,606.02, 18,776.27 and 7,638.26 is: 10,540.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,606.02 : 18,776.27 = 7,638.26 : x
  2. Step 2: Convert to fraction form
    13,606.02/18,776.27 = 7,638.26/x
  3. Step 3: Cross multiply
    13,606.02x = 18,776.27 × 7,638.26
  4. Step 4: Simplify right side
    13,606.02x = 143,417,900.02
  5. Step 5: Solve for x
    x = 143,417,900.02/13,606.02
  6. Step 6: Final answer
    x = 10,540.77

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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.