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Finding the Fourth Proportional to 12,313.56, 18,470.22 and 3,079.56

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Solution

The fourth proportional to 12,313.56, 18,470.22 and 3,079.56 is: 4,619.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,313.56 : 18,470.22 = 3,079.56 : x
  2. Step 2: Convert to fraction form
    12,313.56/18,470.22 = 3,079.56/x
  3. Step 3: Cross multiply
    12,313.56x = 18,470.22 × 3,079.56
  4. Step 4: Simplify right side
    12,313.56x = 56,880,150.70
  5. Step 5: Solve for x
    x = 56,880,150.70/12,313.56
  6. Step 6: Final answer
    x = 4,619.31

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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.