Home / 21,211.15-31,817.99-5,628.73

Finding the Fourth Proportional to 21,211.15, 31,817.99 and 5,628.73

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Solution

The fourth proportional to 21,211.15, 31,817.99 and 5,628.73 is: 8,443.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,211.15 : 31,817.99 = 5,628.73 : x
  2. Step 2: Convert to fraction form
    21,211.15/31,817.99 = 5,628.73/x
  3. Step 3: Cross multiply
    21,211.15x = 31,817.99 × 5,628.73
  4. Step 4: Simplify right side
    21,211.15x = 179,094,874.85
  5. Step 5: Solve for x
    x = 179,094,874.85/21,211.15
  6. Step 6: Final answer
    x = 8,443.43

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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.