Home / 13,626.74-18,806.64-8,320.44

Finding the Fourth Proportional to 13,626.74, 18,806.64 and 8,320.44

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Solution

The fourth proportional to 13,626.74, 18,806.64 and 8,320.44 is: 11,483.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,626.74 : 18,806.64 = 8,320.44 : x
  2. Step 2: Convert to fraction form
    13,626.74/18,806.64 = 8,320.44/x
  3. Step 3: Cross multiply
    13,626.74x = 18,806.64 × 8,320.44
  4. Step 4: Simplify right side
    13,626.74x = 156,479,519.72
  5. Step 5: Solve for x
    x = 156,479,519.72/13,626.74
  6. Step 6: Final answer
    x = 11,483.27

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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.