Home / 13,409.22-18,508.31-8,370.41

Finding the Fourth Proportional to 13,409.22, 18,508.31 and 8,370.41

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Solution

The fourth proportional to 13,409.22, 18,508.31 and 8,370.41 is: 11,553.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,409.22 : 18,508.31 = 8,370.41 : x
  2. Step 2: Convert to fraction form
    13,409.22/18,508.31 = 8,370.41/x
  3. Step 3: Cross multiply
    13,409.22x = 18,508.31 × 8,370.41
  4. Step 4: Simplify right side
    13,409.22x = 154,922,050.57
  5. Step 5: Solve for x
    x = 154,922,050.57/13,409.22
  6. Step 6: Final answer
    x = 11,553.40

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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.