Home / 13,209.77-18,231.33-8,175.60

Finding the Fourth Proportional to 13,209.77, 18,231.33 and 8,175.60

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Solution

The fourth proportional to 13,209.77, 18,231.33 and 8,175.60 is: 11,283.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,209.77 : 18,231.33 = 8,175.60 : x
  2. Step 2: Convert to fraction form
    13,209.77/18,231.33 = 8,175.60/x
  3. Step 3: Cross multiply
    13,209.77x = 18,231.33 × 8,175.60
  4. Step 4: Simplify right side
    13,209.77x = 149,052,061.55
  5. Step 5: Solve for x
    x = 149,052,061.55/13,209.77
  6. Step 6: Final answer
    x = 11,283.48

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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.