Home / 21,021.18-31,533.21-6,229.50

Finding the Fourth Proportional to 21,021.18, 31,533.21 and 6,229.50

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Solution

The fourth proportional to 21,021.18, 31,533.21 and 6,229.50 is: 9,344.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,021.18 : 31,533.21 = 6,229.50 : x
  2. Step 2: Convert to fraction form
    21,021.18/31,533.21 = 6,229.50/x
  3. Step 3: Cross multiply
    21,021.18x = 31,533.21 × 6,229.50
  4. Step 4: Simplify right side
    21,021.18x = 196,436,131.70
  5. Step 5: Solve for x
    x = 196,436,131.70/21,021.18
  6. Step 6: Final answer
    x = 9,344.68

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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.