Home / 13,164.67-18,165.49-8,455.33

Finding the Fourth Proportional to 13,164.67, 18,165.49 and 8,455.33

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Solution

The fourth proportional to 13,164.67, 18,165.49 and 8,455.33 is: 11,667.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,164.67 : 18,165.49 = 8,455.33 : x
  2. Step 2: Convert to fraction form
    13,164.67/18,165.49 = 8,455.33/x
  3. Step 3: Cross multiply
    13,164.67x = 18,165.49 × 8,455.33
  4. Step 4: Simplify right side
    13,164.67x = 153,595,212.56
  5. Step 5: Solve for x
    x = 153,595,212.56/13,164.67
  6. Step 6: Final answer
    x = 11,667.23

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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.