Home / 12,128.30-18,194.26-4,336.50

Finding the Fourth Proportional to 12,128.30, 18,194.26 and 4,336.50

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Solution

The fourth proportional to 12,128.30, 18,194.26 and 4,336.50 is: 6,505.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128.30 : 18,194.26 = 4,336.50 : x
  2. Step 2: Convert to fraction form
    12,128.30/18,194.26 = 4,336.50/x
  3. Step 3: Cross multiply
    12,128.30x = 18,194.26 × 4,336.50
  4. Step 4: Simplify right side
    12,128.30x = 78,899,408.49
  5. Step 5: Solve for x
    x = 78,899,408.49/12,128.30
  6. Step 6: Final answer
    x = 6,505.40

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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.