Home / 12,188.20-18,284.23-4,691.50

Finding the Fourth Proportional to 12,188.20, 18,284.23 and 4,691.50

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Solution

The fourth proportional to 12,188.20, 18,284.23 and 4,691.50 is: 7,037.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,188.20 : 18,284.23 = 4,691.50 : x
  2. Step 2: Convert to fraction form
    12,188.20/18,284.23 = 4,691.50/x
  3. Step 3: Cross multiply
    12,188.20x = 18,284.23 × 4,691.50
  4. Step 4: Simplify right side
    12,188.20x = 85,780,431.06
  5. Step 5: Solve for x
    x = 85,780,431.06/12,188.20
  6. Step 6: Final answer
    x = 7,037.99

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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.