Home / 13,486.86-18,611.82-7,518.60

Finding the Fourth Proportional to 13,486.86, 18,611.82 and 7,518.60

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Solution

The fourth proportional to 13,486.86, 18,611.82 and 7,518.60 is: 10,375.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,486.86 : 18,611.82 = 7,518.60 : x
  2. Step 2: Convert to fraction form
    13,486.86/18,611.82 = 7,518.60/x
  3. Step 3: Cross multiply
    13,486.86x = 18,611.82 × 7,518.60
  4. Step 4: Simplify right side
    13,486.86x = 139,934,829.85
  5. Step 5: Solve for x
    x = 139,934,829.85/13,486.86
  6. Step 6: Final answer
    x = 10,375.64

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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.