Home / 13,518.56-20,275.36-3,658.64

Finding the Fourth Proportional to 13,518.56, 20,275.36 and 3,658.64

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Solution

The fourth proportional to 13,518.56, 20,275.36 and 3,658.64 is: 5,487.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,518.56 : 20,275.36 = 3,658.64 : x
  2. Step 2: Convert to fraction form
    13,518.56/20,275.36 = 3,658.64/x
  3. Step 3: Cross multiply
    13,518.56x = 20,275.36 × 3,658.64
  4. Step 4: Simplify right side
    13,518.56x = 74,180,243.11
  5. Step 5: Solve for x
    x = 74,180,243.11/13,518.56
  6. Step 6: Final answer
    x = 5,487.29

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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.