Home / 13,581.21-18,735.39-8,266.80

Finding the Fourth Proportional to 13,581.21, 18,735.39 and 8,266.80

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Solution

The fourth proportional to 13,581.21, 18,735.39 and 8,266.80 is: 11,404.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,581.21 : 18,735.39 = 8,266.80 : x
  2. Step 2: Convert to fraction form
    13,581.21/18,735.39 = 8,266.80/x
  3. Step 3: Cross multiply
    13,581.21x = 18,735.39 × 8,266.80
  4. Step 4: Simplify right side
    13,581.21x = 154,881,722.05
  5. Step 5: Solve for x
    x = 154,881,722.05/13,581.21
  6. Step 6: Final answer
    x = 11,404.12

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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.