Home / 13,187.66-18,205.36-8,479.94

Finding the Fourth Proportional to 13,187.66, 18,205.36 and 8,479.94

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Solution

The fourth proportional to 13,187.66, 18,205.36 and 8,479.94 is: 11,706.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,187.66 : 18,205.36 = 8,479.94 : x
  2. Step 2: Convert to fraction form
    13,187.66/18,205.36 = 8,479.94/x
  3. Step 3: Cross multiply
    13,187.66x = 18,205.36 × 8,479.94
  4. Step 4: Simplify right side
    13,187.66x = 154,380,360.48
  5. Step 5: Solve for x
    x = 154,380,360.48/13,187.66
  6. Step 6: Final answer
    x = 11,706.43

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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.