Home / 18,830.76-28,246.31-4,790.80

Finding the Fourth Proportional to 18,830.76, 28,246.31 and 4,790.80

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Solution

The fourth proportional to 18,830.76, 28,246.31 and 4,790.80 is: 7,186.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,830.76 : 28,246.31 = 4,790.80 : x
  2. Step 2: Convert to fraction form
    18,830.76/28,246.31 = 4,790.80/x
  3. Step 3: Cross multiply
    18,830.76x = 28,246.31 × 4,790.80
  4. Step 4: Simplify right side
    18,830.76x = 135,322,397.99
  5. Step 5: Solve for x
    x = 135,322,397.99/18,830.76
  6. Step 6: Final answer
    x = 7,186.24

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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.