Home / 12,572.20-18,858.30-3,211.89

Finding the Fourth Proportional to 12,572.20, 18,858.30 and 3,211.89

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Solution

The fourth proportional to 12,572.20, 18,858.30 and 3,211.89 is: 4,817.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,572.20 : 18,858.30 = 3,211.89 : x
  2. Step 2: Convert to fraction form
    12,572.20/18,858.30 = 3,211.89/x
  3. Step 3: Cross multiply
    12,572.20x = 18,858.30 × 3,211.89
  4. Step 4: Simplify right side
    12,572.20x = 60,570,785.19
  5. Step 5: Solve for x
    x = 60,570,785.19/12,572.20
  6. Step 6: Final answer
    x = 4,817.84

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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.