Home / 19,661.34-27,131.52-11,161.20

Finding the Fourth Proportional to 19,661.34, 27,131.52 and 11,161.20

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Solution

The fourth proportional to 19,661.34, 27,131.52 and 11,161.20 is: 15,401.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,661.34 : 27,131.52 = 11,161.20 : x
  2. Step 2: Convert to fraction form
    19,661.34/27,131.52 = 11,161.20/x
  3. Step 3: Cross multiply
    19,661.34x = 27,131.52 × 11,161.20
  4. Step 4: Simplify right side
    19,661.34x = 302,820,321.02
  5. Step 5: Solve for x
    x = 302,820,321.02/19,661.34
  6. Step 6: Final answer
    x = 15,401.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.