Home / 18,693.21-28,029.31-6,206.55

Finding the Fourth Proportional to 18,693.21, 28,029.31 and 6,206.55

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Solution

The fourth proportional to 18,693.21, 28,029.31 and 6,206.55 is: 9,306.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,693.21 : 28,029.31 = 6,206.55 : x
  2. Step 2: Convert to fraction form
    18,693.21/28,029.31 = 6,206.55/x
  3. Step 3: Cross multiply
    18,693.21x = 28,029.31 × 6,206.55
  4. Step 4: Simplify right side
    18,693.21x = 173,965,373.97
  5. Step 5: Solve for x
    x = 173,965,373.97/18,693.21
  6. Step 6: Final answer
    x = 9,306.34

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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.