Home / 13,431.33-18,529.49-8,392.12

Finding the Fourth Proportional to 13,431.33, 18,529.49 and 8,392.12

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Solution

The fourth proportional to 13,431.33, 18,529.49 and 8,392.12 is: 11,577.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,431.33 : 18,529.49 = 8,392.12 : x
  2. Step 2: Convert to fraction form
    13,431.33/18,529.49 = 8,392.12/x
  3. Step 3: Cross multiply
    13,431.33x = 18,529.49 × 8,392.12
  4. Step 4: Simplify right side
    13,431.33x = 155,501,703.62
  5. Step 5: Solve for x
    x = 155,501,703.62/13,431.33
  6. Step 6: Final answer
    x = 11,577.54

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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.