Home / 12,647.58-18,961.62-4,749.92

Finding the Fourth Proportional to 12,647.58, 18,961.62 and 4,749.92

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Solution

The fourth proportional to 12,647.58, 18,961.62 and 4,749.92 is: 7,121.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,647.58 : 18,961.62 = 4,749.92 : x
  2. Step 2: Convert to fraction form
    12,647.58/18,961.62 = 4,749.92/x
  3. Step 3: Cross multiply
    12,647.58x = 18,961.62 × 4,749.92
  4. Step 4: Simplify right side
    12,647.58x = 90,066,256.57
  5. Step 5: Solve for x
    x = 90,066,256.57/12,647.58
  6. Step 6: Final answer
    x = 7,121.23

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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.