Home / 17,820.36-26,739.84-12,930.36

Finding the Fourth Proportional to 17,820.36, 26,739.84 and 12,930.36

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Solution

The fourth proportional to 17,820.36, 26,739.84 and 12,930.36 is: 19,402.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,820.36 : 26,739.84 = 12,930.36 : x
  2. Step 2: Convert to fraction form
    17,820.36/26,739.84 = 12,930.36/x
  3. Step 3: Cross multiply
    17,820.36x = 26,739.84 × 12,930.36
  4. Step 4: Simplify right side
    17,820.36x = 345,755,757.54
  5. Step 5: Solve for x
    x = 345,755,757.54/17,820.36
  6. Step 6: Final answer
    x = 19,402.29

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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.