Home / 12,770.21-19,135.80-5,370.62

Finding the Fourth Proportional to 12,770.21, 19,135.80 and 5,370.62

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Solution

The fourth proportional to 12,770.21, 19,135.80 and 5,370.62 is: 8,047.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,770.21 : 19,135.80 = 5,370.62 : x
  2. Step 2: Convert to fraction form
    12,770.21/19,135.80 = 5,370.62/x
  3. Step 3: Cross multiply
    12,770.21x = 19,135.80 × 5,370.62
  4. Step 4: Simplify right side
    12,770.21x = 102,771,014.52
  5. Step 5: Solve for x
    x = 102,771,014.52/12,770.21
  6. Step 6: Final answer
    x = 8,047.71

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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.