Home / 21,880.61-30,236.11-17,900.27

Finding the Fourth Proportional to 21,880.61, 30,236.11 and 17,900.27

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Solution

The fourth proportional to 21,880.61, 30,236.11 and 17,900.27 is: 24,735.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,880.61 : 30,236.11 = 17,900.27 : x
  2. Step 2: Convert to fraction form
    21,880.61/30,236.11 = 17,900.27/x
  3. Step 3: Cross multiply
    21,880.61x = 30,236.11 × 17,900.27
  4. Step 4: Simplify right side
    21,880.61x = 541,234,532.75
  5. Step 5: Solve for x
    x = 541,234,532.75/21,880.61
  6. Step 6: Final answer
    x = 24,735.81

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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.