Home / 13,635.16-20,453.60-3,639.72

Finding the Fourth Proportional to 13,635.16, 20,453.60 and 3,639.72

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Solution

The fourth proportional to 13,635.16, 20,453.60 and 3,639.72 is: 5,459.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,635.16 : 20,453.60 = 3,639.72 : x
  2. Step 2: Convert to fraction form
    13,635.16/20,453.60 = 3,639.72/x
  3. Step 3: Cross multiply
    13,635.16x = 20,453.60 × 3,639.72
  4. Step 4: Simplify right side
    13,635.16x = 74,445,376.99
  5. Step 5: Solve for x
    x = 74,445,376.99/13,635.16
  6. Step 6: Final answer
    x = 5,459.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.