Home / 20,118.56-27,763.08-11,165.60

Finding the Fourth Proportional to 20,118.56, 27,763.08 and 11,165.60

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Solution

The fourth proportional to 20,118.56, 27,763.08 and 11,165.60 is: 15,408.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,118.56 : 27,763.08 = 11,165.60 : x
  2. Step 2: Convert to fraction form
    20,118.56/27,763.08 = 11,165.60/x
  3. Step 3: Cross multiply
    20,118.56x = 27,763.08 × 11,165.60
  4. Step 4: Simplify right side
    20,118.56x = 309,991,446.05
  5. Step 5: Solve for x
    x = 309,991,446.05/20,118.56
  6. Step 6: Final answer
    x = 15,408.23

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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.