Home / 12,339.42-18,511.05-4,129.50

Finding the Fourth Proportional to 12,339.42, 18,511.05 and 4,129.50

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Solution

The fourth proportional to 12,339.42, 18,511.05 and 4,129.50 is: 6,194.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,339.42 : 18,511.05 = 4,129.50 : x
  2. Step 2: Convert to fraction form
    12,339.42/18,511.05 = 4,129.50/x
  3. Step 3: Cross multiply
    12,339.42x = 18,511.05 × 4,129.50
  4. Step 4: Simplify right side
    12,339.42x = 76,441,380.98
  5. Step 5: Solve for x
    x = 76,441,380.98/12,339.42
  6. Step 6: Final answer
    x = 6,194.89

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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.