Home / 21,912.30-30,235.95-12,350.97

Finding the Fourth Proportional to 21,912.30, 30,235.95 and 12,350.97

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Solution

The fourth proportional to 21,912.30, 30,235.95 and 12,350.97 is: 17,042.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,912.30 : 30,235.95 = 12,350.97 : x
  2. Step 2: Convert to fraction form
    21,912.30/30,235.95 = 12,350.97/x
  3. Step 3: Cross multiply
    21,912.30x = 30,235.95 × 12,350.97
  4. Step 4: Simplify right side
    21,912.30x = 373,443,311.37
  5. Step 5: Solve for x
    x = 373,443,311.37/21,912.30
  6. Step 6: Final answer
    x = 17,042.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.