Home / 13,621.41-18,792.86-8,513.46

Finding the Fourth Proportional to 13,621.41, 18,792.86 and 8,513.46

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Solution

The fourth proportional to 13,621.41, 18,792.86 and 8,513.46 is: 11,745.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,621.41 : 18,792.86 = 8,513.46 : x
  2. Step 2: Convert to fraction form
    13,621.41/18,792.86 = 8,513.46/x
  3. Step 3: Cross multiply
    13,621.41x = 18,792.86 × 8,513.46
  4. Step 4: Simplify right side
    13,621.41x = 159,992,219.33
  5. Step 5: Solve for x
    x = 159,992,219.33/13,621.41
  6. Step 6: Final answer
    x = 11,745.64

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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.