Home / 12,119.70-18,180.63-4,328.58

Finding the Fourth Proportional to 12,119.70, 18,180.63 and 4,328.58

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Solution

The fourth proportional to 12,119.70, 18,180.63 and 4,328.58 is: 6,493.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,119.70 : 18,180.63 = 4,328.58 : x
  2. Step 2: Convert to fraction form
    12,119.70/18,180.63 = 4,328.58/x
  3. Step 3: Cross multiply
    12,119.70x = 18,180.63 × 4,328.58
  4. Step 4: Simplify right side
    12,119.70x = 78,696,311.41
  5. Step 5: Solve for x
    x = 78,696,311.41/12,119.70
  6. Step 6: Final answer
    x = 6,493.26

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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.