Home / 12,276.75-18,416.34-4,879.56

Finding the Fourth Proportional to 12,276.75, 18,416.34 and 4,879.56

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Solution

The fourth proportional to 12,276.75, 18,416.34 and 4,879.56 is: 7,319.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,276.75 : 18,416.34 = 4,879.56 : x
  2. Step 2: Convert to fraction form
    12,276.75/18,416.34 = 4,879.56/x
  3. Step 3: Cross multiply
    12,276.75x = 18,416.34 × 4,879.56
  4. Step 4: Simplify right side
    12,276.75x = 89,863,636.01
  5. Step 5: Solve for x
    x = 89,863,636.01/12,276.75
  6. Step 6: Final answer
    x = 7,319.82

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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.