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Finding the Fourth Proportional to 18,015.75, 24,855.17 and 10,459.40

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Solution

The fourth proportional to 18,015.75, 24,855.17 and 10,459.40 is: 14,430.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,015.75 : 24,855.17 = 10,459.40 : x
  2. Step 2: Convert to fraction form
    18,015.75/24,855.17 = 10,459.40/x
  3. Step 3: Cross multiply
    18,015.75x = 24,855.17 × 10,459.40
  4. Step 4: Simplify right side
    18,015.75x = 259,969,988.53
  5. Step 5: Solve for x
    x = 259,969,988.53/18,015.75
  6. Step 6: Final answer
    x = 14,430.15

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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.