Home / 21,015.82-31,512.93-6,222.88

Finding the Fourth Proportional to 21,015.82, 31,512.93 and 6,222.88

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Solution

The fourth proportional to 21,015.82, 31,512.93 and 6,222.88 is: 9,331.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,015.82 : 31,512.93 = 6,222.88 : x
  2. Step 2: Convert to fraction form
    21,015.82/31,512.93 = 6,222.88/x
  3. Step 3: Cross multiply
    21,015.82x = 31,512.93 × 6,222.88
  4. Step 4: Simplify right side
    21,015.82x = 196,101,181.84
  5. Step 5: Solve for x
    x = 196,101,181.84/21,015.82
  6. Step 6: Final answer
    x = 9,331.12

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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.