Home / 13,338.42-18,398.88-8,556.75

Finding the Fourth Proportional to 13,338.42, 18,398.88 and 8,556.75

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Solution

The fourth proportional to 13,338.42, 18,398.88 and 8,556.75 is: 11,803.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,338.42 : 18,398.88 = 8,556.75 : x
  2. Step 2: Convert to fraction form
    13,338.42/18,398.88 = 8,556.75/x
  3. Step 3: Cross multiply
    13,338.42x = 18,398.88 × 8,556.75
  4. Step 4: Simplify right side
    13,338.42x = 157,434,616.44
  5. Step 5: Solve for x
    x = 157,434,616.44/13,338.42
  6. Step 6: Final answer
    x = 11,803.09

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Half scale
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Double scale
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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.