Home / 12,118.76-18,177.59-4,223.07

Finding the Fourth Proportional to 12,118.76, 18,177.59 and 4,223.07

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Solution

The fourth proportional to 12,118.76, 18,177.59 and 4,223.07 is: 6,334.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,118.76 : 18,177.59 = 4,223.07 : x
  2. Step 2: Convert to fraction form
    12,118.76/18,177.59 = 4,223.07/x
  3. Step 3: Cross multiply
    12,118.76x = 18,177.59 × 4,223.07
  4. Step 4: Simplify right side
    12,118.76x = 76,765,245.56
  5. Step 5: Solve for x
    x = 76,765,245.56/12,118.76
  6. Step 6: Final answer
    x = 6,334.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.