Home / 13,619.68-18,790.32-8,906.72

Finding the Fourth Proportional to 13,619.68, 18,790.32 and 8,906.72

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Solution

The fourth proportional to 13,619.68, 18,790.32 and 8,906.72 is: 12,288.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,619.68 : 18,790.32 = 8,906.72 : x
  2. Step 2: Convert to fraction form
    13,619.68/18,790.32 = 8,906.72/x
  3. Step 3: Cross multiply
    13,619.68x = 18,790.32 × 8,906.72
  4. Step 4: Simplify right side
    13,619.68x = 167,360,118.95
  5. Step 5: Solve for x
    x = 167,360,118.95/13,619.68
  6. Step 6: Final answer
    x = 12,288.11

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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.