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Finding the Fourth Proportional to 13,756.44, 20,657.22 and 13,055.28

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Solution

The fourth proportional to 13,756.44, 20,657.22 and 13,055.28 is: 19,604.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,756.44 : 20,657.22 = 13,055.28 : x
  2. Step 2: Convert to fraction form
    13,756.44/20,657.22 = 13,055.28/x
  3. Step 3: Cross multiply
    13,756.44x = 20,657.22 × 13,055.28
  4. Step 4: Simplify right side
    13,756.44x = 269,685,791.12
  5. Step 5: Solve for x
    x = 269,685,791.12/13,756.44
  6. Step 6: Final answer
    x = 19,604.33

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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.