Home / 13,647.20-20,469.83-5,325.66

Finding the Fourth Proportional to 13,647.20, 20,469.83 and 5,325.66

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Solution

The fourth proportional to 13,647.20, 20,469.83 and 5,325.66 is: 7,988.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,647.20 : 20,469.83 = 5,325.66 : x
  2. Step 2: Convert to fraction form
    13,647.20/20,469.83 = 5,325.66/x
  3. Step 3: Cross multiply
    13,647.20x = 20,469.83 × 5,325.66
  4. Step 4: Simplify right side
    13,647.20x = 109,015,328.21
  5. Step 5: Solve for x
    x = 109,015,328.21/13,647.20
  6. Step 6: Final answer
    x = 7,988.11

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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.