Home / 13,209.67-18,231.23-8,175.52

Finding the Fourth Proportional to 13,209.67, 18,231.23 and 8,175.52

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Solution

The fourth proportional to 13,209.67, 18,231.23 and 8,175.52 is: 11,283.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,209.67 : 18,231.23 = 8,175.52 : x
  2. Step 2: Convert to fraction form
    13,209.67/18,231.23 = 8,175.52/x
  3. Step 3: Cross multiply
    13,209.67x = 18,231.23 × 8,175.52
  4. Step 4: Simplify right side
    13,209.67x = 149,049,680.18
  5. Step 5: Solve for x
    x = 149,049,680.18/13,209.67
  6. Step 6: Final answer
    x = 11,283.37

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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.