Home / 30,138.30-41,591.16-16,709.76

Finding the Fourth Proportional to 30,138.30, 41,591.16 and 16,709.76

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Solution

The fourth proportional to 30,138.30, 41,591.16 and 16,709.76 is: 23,059.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,138.30 : 41,591.16 = 16,709.76 : x
  2. Step 2: Convert to fraction form
    30,138.30/41,591.16 = 16,709.76/x
  3. Step 3: Cross multiply
    30,138.30x = 41,591.16 × 16,709.76
  4. Step 4: Simplify right side
    30,138.30x = 694,978,301.72
  5. Step 5: Solve for x
    x = 694,978,301.72/30,138.30
  6. Step 6: Final answer
    x = 23,059.64

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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.