Home / 13,720.98-20,582.68-5,713.97

Finding the Fourth Proportional to 13,720.98, 20,582.68 and 5,713.97

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Solution

The fourth proportional to 13,720.98, 20,582.68 and 5,713.97 is: 8,571.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,720.98 : 20,582.68 = 5,713.97 : x
  2. Step 2: Convert to fraction form
    13,720.98/20,582.68 = 5,713.97/x
  3. Step 3: Cross multiply
    13,720.98x = 20,582.68 × 5,713.97
  4. Step 4: Simplify right side
    13,720.98x = 117,608,853.21
  5. Step 5: Solve for x
    x = 117,608,853.21/13,720.98
  6. Step 6: Final answer
    x = 8,571.46

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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.