Home / 13,789.11-20,683.23-8,205.06

Finding the Fourth Proportional to 13,789.11, 20,683.23 and 8,205.06

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Solution

The fourth proportional to 13,789.11, 20,683.23 and 8,205.06 is: 12,307.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,789.11 : 20,683.23 = 8,205.06 : x
  2. Step 2: Convert to fraction form
    13,789.11/20,683.23 = 8,205.06/x
  3. Step 3: Cross multiply
    13,789.11x = 20,683.23 × 8,205.06
  4. Step 4: Simplify right side
    13,789.11x = 169,707,143.14
  5. Step 5: Solve for x
    x = 169,707,143.14/13,789.11
  6. Step 6: Final answer
    x = 12,307.33

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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.