Home / 18,830.50-28,246.32-4,979.50

Finding the Fourth Proportional to 18,830.50, 28,246.32 and 4,979.50

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Solution

The fourth proportional to 18,830.50, 28,246.32 and 4,979.50 is: 7,469.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,830.50 : 28,246.32 = 4,979.50 : x
  2. Step 2: Convert to fraction form
    18,830.50/28,246.32 = 4,979.50/x
  3. Step 3: Cross multiply
    18,830.50x = 28,246.32 × 4,979.50
  4. Step 4: Simplify right side
    18,830.50x = 140,652,550.44
  5. Step 5: Solve for x
    x = 140,652,550.44/18,830.50
  6. Step 6: Final answer
    x = 7,469.40

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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.