Home / 11,621.21-17,431.67-2,856.20

Finding the Fourth Proportional to 11,621.21, 17,431.67 and 2,856.20

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Solution

The fourth proportional to 11,621.21, 17,431.67 and 2,856.20 is: 4,284.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,621.21 : 17,431.67 = 2,856.20 : x
  2. Step 2: Convert to fraction form
    11,621.21/17,431.67 = 2,856.20/x
  3. Step 3: Cross multiply
    11,621.21x = 17,431.67 × 2,856.20
  4. Step 4: Simplify right side
    11,621.21x = 49,788,335.85
  5. Step 5: Solve for x
    x = 49,788,335.85/11,621.21
  6. Step 6: Final answer
    x = 4,284.26

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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.