Home / 18,811.86-28,219.19-6,331.83

Finding the Fourth Proportional to 18,811.86, 28,219.19 and 6,331.83

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Solution

The fourth proportional to 18,811.86, 28,219.19 and 6,331.83 is: 9,498.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,811.86 : 28,219.19 = 6,331.83 : x
  2. Step 2: Convert to fraction form
    18,811.86/28,219.19 = 6,331.83/x
  3. Step 3: Cross multiply
    18,811.86x = 28,219.19 × 6,331.83
  4. Step 4: Simplify right side
    18,811.86x = 178,679,082.16
  5. Step 5: Solve for x
    x = 178,679,082.16/18,811.86
  6. Step 6: Final answer
    x = 9,498.21

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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.