Home / 13,185.22-18,195.71-8,148.30

Finding the Fourth Proportional to 13,185.22, 18,195.71 and 8,148.30

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Solution

The fourth proportional to 13,185.22, 18,195.71 and 8,148.30 is: 11,244.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,185.22 : 18,195.71 = 8,148.30 : x
  2. Step 2: Convert to fraction form
    13,185.22/18,195.71 = 8,148.30/x
  3. Step 3: Cross multiply
    13,185.22x = 18,195.71 × 8,148.30
  4. Step 4: Simplify right side
    13,185.22x = 148,264,103.79
  5. Step 5: Solve for x
    x = 148,264,103.79/13,185.22
  6. Step 6: Final answer
    x = 11,244.72

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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.