Home / 13,356.20-18,428.82-8,049.80

Finding the Fourth Proportional to 13,356.20, 18,428.82 and 8,049.80

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Solution

The fourth proportional to 13,356.20, 18,428.82 and 8,049.80 is: 11,107.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,356.20 : 18,428.82 = 8,049.80 : x
  2. Step 2: Convert to fraction form
    13,356.20/18,428.82 = 8,049.80/x
  3. Step 3: Cross multiply
    13,356.20x = 18,428.82 × 8,049.80
  4. Step 4: Simplify right side
    13,356.20x = 148,348,315.24
  5. Step 5: Solve for x
    x = 148,348,315.24/13,356.20
  6. Step 6: Final answer
    x = 11,107.08

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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.