Home / 18,687.38-28,030.61-4,647.44

Finding the Fourth Proportional to 18,687.38, 28,030.61 and 4,647.44

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Solution

The fourth proportional to 18,687.38, 28,030.61 and 4,647.44 is: 6,971.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,687.38 : 28,030.61 = 4,647.44 : x
  2. Step 2: Convert to fraction form
    18,687.38/28,030.61 = 4,647.44/x
  3. Step 3: Cross multiply
    18,687.38x = 28,030.61 × 4,647.44
  4. Step 4: Simplify right side
    18,687.38x = 130,270,414.75
  5. Step 5: Solve for x
    x = 130,270,414.75/18,687.38
  6. Step 6: Final answer
    x = 6,971.04

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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.