Home / 20,142.09-30,213.73-9,613.22

Finding the Fourth Proportional to 20,142.09, 30,213.73 and 9,613.22

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Solution

The fourth proportional to 20,142.09, 30,213.73 and 9,613.22 is: 14,420.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,142.09 : 30,213.73 = 9,613.22 : x
  2. Step 2: Convert to fraction form
    20,142.09/30,213.73 = 9,613.22/x
  3. Step 3: Cross multiply
    20,142.09x = 30,213.73 × 9,613.22
  4. Step 4: Simplify right side
    20,142.09x = 290,451,233.51
  5. Step 5: Solve for x
    x = 290,451,233.51/20,142.09
  6. Step 6: Final answer
    x = 14,420.11

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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.