Home / 13,940.30-20,882.21-6,899.07

Finding the Fourth Proportional to 13,940.30, 20,882.21 and 6,899.07

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Solution

The fourth proportional to 13,940.30, 20,882.21 and 6,899.07 is: 10,334.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,940.30 : 20,882.21 = 6,899.07 : x
  2. Step 2: Convert to fraction form
    13,940.30/20,882.21 = 6,899.07/x
  3. Step 3: Cross multiply
    13,940.30x = 20,882.21 × 6,899.07
  4. Step 4: Simplify right side
    13,940.30x = 144,067,872.36
  5. Step 5: Solve for x
    x = 144,067,872.36/13,940.30
  6. Step 6: Final answer
    x = 10,334.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.