Home / 20,118.36-27,762.92-11,165.80

Finding the Fourth Proportional to 20,118.36, 27,762.92 and 11,165.80

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Solution

The fourth proportional to 20,118.36, 27,762.92 and 11,165.80 is: 15,408.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,118.36 : 27,762.92 = 11,165.80 : x
  2. Step 2: Convert to fraction form
    20,118.36/27,762.92 = 11,165.80/x
  3. Step 3: Cross multiply
    20,118.36x = 27,762.92 × 11,165.80
  4. Step 4: Simplify right side
    20,118.36x = 309,995,212.14
  5. Step 5: Solve for x
    x = 309,995,212.14/20,118.36
  6. Step 6: Final answer
    x = 15,408.57

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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.