Home / 18,212.55-27,258.67-12,865.33

Finding the Fourth Proportional to 18,212.55, 27,258.67 and 12,865.33

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Solution

The fourth proportional to 18,212.55, 27,258.67 and 12,865.33 is: 19,255.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,212.55 : 27,258.67 = 12,865.33 : x
  2. Step 2: Convert to fraction form
    18,212.55/27,258.67 = 12,865.33/x
  3. Step 3: Cross multiply
    18,212.55x = 27,258.67 × 12,865.33
  4. Step 4: Simplify right side
    18,212.55x = 350,691,784.91
  5. Step 5: Solve for x
    x = 350,691,784.91/18,212.55
  6. Step 6: Final answer
    x = 19,255.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.