Home / 18,221.36-25,158.96-11,157.44

Finding the Fourth Proportional to 18,221.36, 25,158.96 and 11,157.44

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Solution

The fourth proportional to 18,221.36, 25,158.96 and 11,157.44 is: 15,405.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,221.36 : 25,158.96 = 11,157.44 : x
  2. Step 2: Convert to fraction form
    18,221.36/25,158.96 = 11,157.44/x
  3. Step 3: Cross multiply
    18,221.36x = 25,158.96 × 11,157.44
  4. Step 4: Simplify right side
    18,221.36x = 280,709,586.66
  5. Step 5: Solve for x
    x = 280,709,586.66/18,221.36
  6. Step 6: Final answer
    x = 15,405.52

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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.