Home / 21,021.82-31,532.30-5,226.88

Finding the Fourth Proportional to 21,021.82, 31,532.30 and 5,226.88

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Solution

The fourth proportional to 21,021.82, 31,532.30 and 5,226.88 is: 7,840.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,021.82 : 31,532.30 = 5,226.88 : x
  2. Step 2: Convert to fraction form
    21,021.82/31,532.30 = 5,226.88/x
  3. Step 3: Cross multiply
    21,021.82x = 31,532.30 × 5,226.88
  4. Step 4: Simplify right side
    21,021.82x = 164,815,548.22
  5. Step 5: Solve for x
    x = 164,815,548.22/21,021.82
  6. Step 6: Final answer
    x = 7,840.21

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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.