Home / 20,626.09-30,917.42-13,135.34

Finding the Fourth Proportional to 20,626.09, 30,917.42 and 13,135.34

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Solution

The fourth proportional to 20,626.09, 30,917.42 and 13,135.34 is: 19,689.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,626.09 : 30,917.42 = 13,135.34 : x
  2. Step 2: Convert to fraction form
    20,626.09/30,917.42 = 13,135.34/x
  3. Step 3: Cross multiply
    20,626.09x = 30,917.42 × 13,135.34
  4. Step 4: Simplify right side
    20,626.09x = 406,110,757.95
  5. Step 5: Solve for x
    x = 406,110,757.95/20,626.09
  6. Step 6: Final answer
    x = 19,689.18

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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.