Home / 13,120.36-19,676.22-8,761.48

Finding the Fourth Proportional to 13,120.36, 19,676.22 and 8,761.48

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Solution

The fourth proportional to 13,120.36, 19,676.22 and 8,761.48 is: 13,139.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,120.36 : 19,676.22 = 8,761.48 : x
  2. Step 2: Convert to fraction form
    13,120.36/19,676.22 = 8,761.48/x
  3. Step 3: Cross multiply
    13,120.36x = 19,676.22 × 8,761.48
  4. Step 4: Simplify right side
    13,120.36x = 172,392,808.01
  5. Step 5: Solve for x
    x = 172,392,808.01/13,120.36
  6. Step 6: Final answer
    x = 13,139.34

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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.