Home / 20,631.44-28,467.24-12,674.96

Finding the Fourth Proportional to 20,631.44, 28,467.24 and 12,674.96

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Solution

The fourth proportional to 20,631.44, 28,467.24 and 12,674.96 is: 17,488.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,631.44 : 28,467.24 = 12,674.96 : x
  2. Step 2: Convert to fraction form
    20,631.44/28,467.24 = 12,674.96/x
  3. Step 3: Cross multiply
    20,631.44x = 28,467.24 × 12,674.96
  4. Step 4: Simplify right side
    20,631.44x = 360,821,128.31
  5. Step 5: Solve for x
    x = 360,821,128.31/20,631.44
  6. Step 6: Final answer
    x = 17,488.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.