Home / 21,012.90-31,519.44-6,222.09

Finding the Fourth Proportional to 21,012.90, 31,519.44 and 6,222.09

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Solution

The fourth proportional to 21,012.90, 31,519.44 and 6,222.09 is: 9,333.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,012.90 : 31,519.44 = 6,222.09 : x
  2. Step 2: Convert to fraction form
    21,012.90/31,519.44 = 6,222.09/x
  3. Step 3: Cross multiply
    21,012.90x = 31,519.44 × 6,222.09
  4. Step 4: Simplify right side
    21,012.90x = 196,116,792.43
  5. Step 5: Solve for x
    x = 196,116,792.43/21,012.90
  6. Step 6: Final answer
    x = 9,333.16

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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.