Home / 13,782.72-20,674.24-5,580.48

Finding the Fourth Proportional to 13,782.72, 20,674.24 and 5,580.48

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Solution

The fourth proportional to 13,782.72, 20,674.24 and 5,580.48 is: 8,370.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,782.72 : 20,674.24 = 5,580.48 : x
  2. Step 2: Convert to fraction form
    13,782.72/20,674.24 = 5,580.48/x
  3. Step 3: Cross multiply
    13,782.72x = 20,674.24 × 5,580.48
  4. Step 4: Simplify right side
    13,782.72x = 115,372,182.84
  5. Step 5: Solve for x
    x = 115,372,182.84/13,782.72
  6. Step 6: Final answer
    x = 8,370.78

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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.