Home / 13,144.52-18,138.74-7,176.09

Finding the Fourth Proportional to 13,144.52, 18,138.74 and 7,176.09

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Solution

The fourth proportional to 13,144.52, 18,138.74 and 7,176.09 is: 9,902.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,144.52 : 18,138.74 = 7,176.09 : x
  2. Step 2: Convert to fraction form
    13,144.52/18,138.74 = 7,176.09/x
  3. Step 3: Cross multiply
    13,144.52x = 18,138.74 × 7,176.09
  4. Step 4: Simplify right side
    13,144.52x = 130,165,194.85
  5. Step 5: Solve for x
    x = 130,165,194.85/13,144.52
  6. Step 6: Final answer
    x = 9,902.62

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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.