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Finding the Fourth Proportional to 18,499.89, 25,532.35 and 10,435.20

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Solution

The fourth proportional to 18,499.89, 25,532.35 and 10,435.20 is: 14,401.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,499.89 : 25,532.35 = 10,435.20 : x
  2. Step 2: Convert to fraction form
    18,499.89/25,532.35 = 10,435.20/x
  3. Step 3: Cross multiply
    18,499.89x = 25,532.35 × 10,435.20
  4. Step 4: Simplify right side
    18,499.89x = 266,435,229.85
  5. Step 5: Solve for x
    x = 266,435,229.85/18,499.89
  6. Step 6: Final answer
    x = 14,401.99

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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.