Home / 13,486.75-18,614.14-8,455.33

Finding the Fourth Proportional to 13,486.75, 18,614.14 and 8,455.33

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Solution

The fourth proportional to 13,486.75, 18,614.14 and 8,455.33 is: 11,669.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,486.75 : 18,614.14 = 8,455.33 : x
  2. Step 2: Convert to fraction form
    13,486.75/18,614.14 = 8,455.33/x
  3. Step 3: Cross multiply
    13,486.75x = 18,614.14 × 8,455.33
  4. Step 4: Simplify right side
    13,486.75x = 157,388,698.50
  5. Step 5: Solve for x
    x = 157,388,698.50/13,486.75
  6. Step 6: Final answer
    x = 11,669.88

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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.