Home / 13,420.53-20,125.94-5,102.75

Finding the Fourth Proportional to 13,420.53, 20,125.94 and 5,102.75

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Solution

The fourth proportional to 13,420.53, 20,125.94 and 5,102.75 is: 7,652.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,420.53 : 20,125.94 = 5,102.75 : x
  2. Step 2: Convert to fraction form
    13,420.53/20,125.94 = 5,102.75/x
  3. Step 3: Cross multiply
    13,420.53x = 20,125.94 × 5,102.75
  4. Step 4: Simplify right side
    13,420.53x = 102,697,665.14
  5. Step 5: Solve for x
    x = 102,697,665.14/13,420.53
  6. Step 6: Final answer
    x = 7,652.28

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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.