Home / 20,738.06-31,107.82-8,264.06

Finding the Fourth Proportional to 20,738.06, 31,107.82 and 8,264.06

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Solution

The fourth proportional to 20,738.06, 31,107.82 and 8,264.06 is: 12,396.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,738.06 : 31,107.82 = 8,264.06 : x
  2. Step 2: Convert to fraction form
    20,738.06/31,107.82 = 8,264.06/x
  3. Step 3: Cross multiply
    20,738.06x = 31,107.82 × 8,264.06
  4. Step 4: Simplify right side
    20,738.06x = 257,076,890.95
  5. Step 5: Solve for x
    x = 257,076,890.95/20,738.06
  6. Step 6: Final answer
    x = 12,396.38

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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.