Home / 18,830.32-28,245.65-4,790.36

Finding the Fourth Proportional to 18,830.32, 28,245.65 and 4,790.36

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Solution

The fourth proportional to 18,830.32, 28,245.65 and 4,790.36 is: 7,185.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,830.32 : 28,245.65 = 4,790.36 : x
  2. Step 2: Convert to fraction form
    18,830.32/28,245.65 = 4,790.36/x
  3. Step 3: Cross multiply
    18,830.32x = 28,245.65 × 4,790.36
  4. Step 4: Simplify right side
    18,830.32x = 135,306,905.54
  5. Step 5: Solve for x
    x = 135,306,905.54/18,830.32
  6. Step 6: Final answer
    x = 7,185.59

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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.