Home / 13,662.63-20,480.26-5,331.18

Finding the Fourth Proportional to 13,662.63, 20,480.26 and 5,331.18

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Solution

The fourth proportional to 13,662.63, 20,480.26 and 5,331.18 is: 7,991.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,662.63 : 20,480.26 = 5,331.18 : x
  2. Step 2: Convert to fraction form
    13,662.63/20,480.26 = 5,331.18/x
  3. Step 3: Cross multiply
    13,662.63x = 20,480.26 × 5,331.18
  4. Step 4: Simplify right side
    13,662.63x = 109,183,952.51
  5. Step 5: Solve for x
    x = 109,183,952.51/13,662.63
  6. Step 6: Final answer
    x = 7,991.43

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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.