Home / 21,216.37-31,829.11-7,175.70

Finding the Fourth Proportional to 21,216.37, 31,829.11 and 7,175.70

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Solution

The fourth proportional to 21,216.37, 31,829.11 and 7,175.70 is: 10,765.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,216.37 : 31,829.11 = 7,175.70 : x
  2. Step 2: Convert to fraction form
    21,216.37/31,829.11 = 7,175.70/x
  3. Step 3: Cross multiply
    21,216.37x = 31,829.11 × 7,175.70
  4. Step 4: Simplify right side
    21,216.37x = 228,396,144.63
  5. Step 5: Solve for x
    x = 228,396,144.63/21,216.37
  6. Step 6: Final answer
    x = 10,765.09

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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.