Home / 13,190.97-19,790.51-5,400.39

Finding the Fourth Proportional to 13,190.97, 19,790.51 and 5,400.39

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Solution

The fourth proportional to 13,190.97, 19,790.51 and 5,400.39 is: 8,102.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,190.97 : 19,790.51 = 5,400.39 : x
  2. Step 2: Convert to fraction form
    13,190.97/19,790.51 = 5,400.39/x
  3. Step 3: Cross multiply
    13,190.97x = 19,790.51 × 5,400.39
  4. Step 4: Simplify right side
    13,190.97x = 106,876,445.30
  5. Step 5: Solve for x
    x = 106,876,445.30/13,190.97
  6. Step 6: Final answer
    x = 8,102.24

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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.