Home / 34,333.12-47,383.68-20,912.23

Finding the Fourth Proportional to 34,333.12, 47,383.68 and 20,912.23

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Solution

The fourth proportional to 34,333.12, 47,383.68 and 20,912.23 is: 28,861.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,333.12 : 47,383.68 = 20,912.23 : x
  2. Step 2: Convert to fraction form
    34,333.12/47,383.68 = 20,912.23/x
  3. Step 3: Cross multiply
    34,333.12x = 47,383.68 × 20,912.23
  4. Step 4: Simplify right side
    34,333.12x = 990,898,414.41
  5. Step 5: Solve for x
    x = 990,898,414.41/34,333.12
  6. Step 6: Final answer
    x = 28,861.30

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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.