Home / 13,490.72-20,229.06-5,168.24

Finding the Fourth Proportional to 13,490.72, 20,229.06 and 5,168.24

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Solution

The fourth proportional to 13,490.72, 20,229.06 and 5,168.24 is: 7,749.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,490.72 : 20,229.06 = 5,168.24 : x
  2. Step 2: Convert to fraction form
    13,490.72/20,229.06 = 5,168.24/x
  3. Step 3: Cross multiply
    13,490.72x = 20,229.06 × 5,168.24
  4. Step 4: Simplify right side
    13,490.72x = 104,548,637.05
  5. Step 5: Solve for x
    x = 104,548,637.05/13,490.72
  6. Step 6: Final answer
    x = 7,749.67

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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.