Home / 13,783.72-20,675.74-5,581.48

Finding the Fourth Proportional to 13,783.72, 20,675.74 and 5,581.48

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Solution

The fourth proportional to 13,783.72, 20,675.74 and 5,581.48 is: 8,372.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,783.72 : 20,675.74 = 5,581.48 : x
  2. Step 2: Convert to fraction form
    13,783.72/20,675.74 = 5,581.48/x
  3. Step 3: Cross multiply
    13,783.72x = 20,675.74 × 5,581.48
  4. Step 4: Simplify right side
    13,783.72x = 115,401,229.30
  5. Step 5: Solve for x
    x = 115,401,229.30/13,783.72
  6. Step 6: Final answer
    x = 8,372.28

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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.