Home / 20,049.49-27,664.86-12,880.99

Finding the Fourth Proportional to 20,049.49, 27,664.86 and 12,880.99

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Solution

The fourth proportional to 20,049.49, 27,664.86 and 12,880.99 is: 17,773.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,049.49 : 27,664.86 = 12,880.99 : x
  2. Step 2: Convert to fraction form
    20,049.49/27,664.86 = 12,880.99/x
  3. Step 3: Cross multiply
    20,049.49x = 27,664.86 × 12,880.99
  4. Step 4: Simplify right side
    20,049.49x = 356,350,785.01
  5. Step 5: Solve for x
    x = 356,350,785.01/20,049.49
  6. Step 6: Final answer
    x = 17,773.56

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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.