Home / 12,279.27-18,416.38-3,512.24

Finding the Fourth Proportional to 12,279.27, 18,416.38 and 3,512.24

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Solution

The fourth proportional to 12,279.27, 18,416.38 and 3,512.24 is: 5,267.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,279.27 : 18,416.38 = 3,512.24 : x
  2. Step 2: Convert to fraction form
    12,279.27/18,416.38 = 3,512.24/x
  3. Step 3: Cross multiply
    12,279.27x = 18,416.38 × 3,512.24
  4. Step 4: Simplify right side
    12,279.27x = 64,682,746.49
  5. Step 5: Solve for x
    x = 64,682,746.49/12,279.27
  6. Step 6: Final answer
    x = 5,267.64

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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.