Home / 13,205.97-18,205.38-9,422.67

Finding the Fourth Proportional to 13,205.97, 18,205.38 and 9,422.67

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Solution

The fourth proportional to 13,205.97, 18,205.38 and 9,422.67 is: 12,989.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,205.97 : 18,205.38 = 9,422.67 : x
  2. Step 2: Convert to fraction form
    13,205.97/18,205.38 = 9,422.67/x
  3. Step 3: Cross multiply
    13,205.97x = 18,205.38 × 9,422.67
  4. Step 4: Simplify right side
    13,205.97x = 171,543,287.96
  5. Step 5: Solve for x
    x = 171,543,287.96/13,205.97
  6. Step 6: Final answer
    x = 12,989.83

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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.