Home / 13,480.36-20,219.54-5,161.12

Finding the Fourth Proportional to 13,480.36, 20,219.54 and 5,161.12

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Solution

The fourth proportional to 13,480.36, 20,219.54 and 5,161.12 is: 7,741.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,480.36 : 20,219.54 = 5,161.12 : x
  2. Step 2: Convert to fraction form
    13,480.36/20,219.54 = 5,161.12/x
  3. Step 3: Cross multiply
    13,480.36x = 20,219.54 × 5,161.12
  4. Step 4: Simplify right side
    13,480.36x = 104,355,472.28
  5. Step 5: Solve for x
    x = 104,355,472.28/13,480.36
  6. Step 6: Final answer
    x = 7,741.30

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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.