Home / 13,400.55-20,100.96-5,078.33

Finding the Fourth Proportional to 13,400.55, 20,100.96 and 5,078.33

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Solution

The fourth proportional to 13,400.55, 20,100.96 and 5,078.33 is: 7,617.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,400.55 : 20,100.96 = 5,078.33 : x
  2. Step 2: Convert to fraction form
    13,400.55/20,100.96 = 5,078.33/x
  3. Step 3: Cross multiply
    13,400.55x = 20,100.96 × 5,078.33
  4. Step 4: Simplify right side
    13,400.55x = 102,079,283.07
  5. Step 5: Solve for x
    x = 102,079,283.07/13,400.55
  6. Step 6: Final answer
    x = 7,617.54

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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.