Home / 13,647.07-20,469.68-5,325.54

Finding the Fourth Proportional to 13,647.07, 20,469.68 and 5,325.54

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Solution

The fourth proportional to 13,647.07, 20,469.68 and 5,325.54 is: 7,987.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,647.07 : 20,469.68 = 5,325.54 : x
  2. Step 2: Convert to fraction form
    13,647.07/20,469.68 = 5,325.54/x
  3. Step 3: Cross multiply
    13,647.07x = 20,469.68 × 5,325.54
  4. Step 4: Simplify right side
    13,647.07x = 109,012,099.63
  5. Step 5: Solve for x
    x = 109,012,099.63/13,647.07
  6. Step 6: Final answer
    x = 7,987.95

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1.5x scale

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.