Home / 19,186.58-28,770.06-8,789.42

Finding the Fourth Proportional to 19,186.58, 28,770.06 and 8,789.42

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Solution

The fourth proportional to 19,186.58, 28,770.06 and 8,789.42 is: 13,179.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,186.58 : 28,770.06 = 8,789.42 : x
  2. Step 2: Convert to fraction form
    19,186.58/28,770.06 = 8,789.42/x
  3. Step 3: Cross multiply
    19,186.58x = 28,770.06 × 8,789.42
  4. Step 4: Simplify right side
    19,186.58x = 252,872,140.77
  5. Step 5: Solve for x
    x = 252,872,140.77/19,186.58
  6. Step 6: Final answer
    x = 13,179.64

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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.