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Finding the Fourth Proportional to 18,607.21, 25,677.81 and 10,109.25

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Solution

The fourth proportional to 18,607.21, 25,677.81 and 10,109.25 is: 13,950.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,607.21 : 25,677.81 = 10,109.25 : x
  2. Step 2: Convert to fraction form
    18,607.21/25,677.81 = 10,109.25/x
  3. Step 3: Cross multiply
    18,607.21x = 25,677.81 × 10,109.25
  4. Step 4: Simplify right side
    18,607.21x = 259,583,400.74
  5. Step 5: Solve for x
    x = 259,583,400.74/18,607.21
  6. Step 6: Final answer
    x = 13,950.69

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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.