Home / 13,427.62-18,530.08-8,122.42

Finding the Fourth Proportional to 13,427.62, 18,530.08 and 8,122.42

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Solution

The fourth proportional to 13,427.62, 18,530.08 and 8,122.42 is: 11,208.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,427.62 : 18,530.08 = 8,122.42 : x
  2. Step 2: Convert to fraction form
    13,427.62/18,530.08 = 8,122.42/x
  3. Step 3: Cross multiply
    13,427.62x = 18,530.08 × 8,122.42
  4. Step 4: Simplify right side
    13,427.62x = 150,509,092.39
  5. Step 5: Solve for x
    x = 150,509,092.39/13,427.62
  6. Step 6: Final answer
    x = 11,208.92

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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.