Home / 13,603.29-20,388.53-7,025.90

Finding the Fourth Proportional to 13,603.29, 20,388.53 and 7,025.90

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Solution

The fourth proportional to 13,603.29, 20,388.53 and 7,025.90 is: 10,530.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,603.29 : 20,388.53 = 7,025.90 : x
  2. Step 2: Convert to fraction form
    13,603.29/20,388.53 = 7,025.90/x
  3. Step 3: Cross multiply
    13,603.29x = 20,388.53 × 7,025.90
  4. Step 4: Simplify right side
    13,603.29x = 143,247,635.85
  5. Step 5: Solve for x
    x = 143,247,635.85/13,603.29
  6. Step 6: Final answer
    x = 10,530.37

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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.