Home / 13,611.48-18,778.44-8,297.08

Finding the Fourth Proportional to 13,611.48, 18,778.44 and 8,297.08

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Solution

The fourth proportional to 13,611.48, 18,778.44 and 8,297.08 is: 11,446.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,611.48 : 18,778.44 = 8,297.08 : x
  2. Step 2: Convert to fraction form
    13,611.48/18,778.44 = 8,297.08/x
  3. Step 3: Cross multiply
    13,611.48x = 18,778.44 × 8,297.08
  4. Step 4: Simplify right side
    13,611.48x = 155,806,218.96
  5. Step 5: Solve for x
    x = 155,806,218.96/13,611.48
  6. Step 6: Final answer
    x = 11,446.68

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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.