Home / 20,144.98-30,207.09-9,042.15

Finding the Fourth Proportional to 20,144.98, 30,207.09 and 9,042.15

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Solution

The fourth proportional to 20,144.98, 30,207.09 and 9,042.15 is: 13,558.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,144.98 : 30,207.09 = 9,042.15 : x
  2. Step 2: Convert to fraction form
    20,144.98/30,207.09 = 9,042.15/x
  3. Step 3: Cross multiply
    20,144.98x = 30,207.09 × 9,042.15
  4. Step 4: Simplify right side
    20,144.98x = 273,136,993.63
  5. Step 5: Solve for x
    x = 273,136,993.63/20,144.98
  6. Step 6: Final answer
    x = 13,558.56

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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.