Home / 18,887.94-28,331.32-4,847.40

Finding the Fourth Proportional to 18,887.94, 28,331.32 and 4,847.40

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Solution

The fourth proportional to 18,887.94, 28,331.32 and 4,847.40 is: 7,270.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,887.94 : 28,331.32 = 4,847.40 : x
  2. Step 2: Convert to fraction form
    18,887.94/28,331.32 = 4,847.40/x
  3. Step 3: Cross multiply
    18,887.94x = 28,331.32 × 4,847.40
  4. Step 4: Simplify right side
    18,887.94x = 137,333,240.57
  5. Step 5: Solve for x
    x = 137,333,240.57/18,887.94
  6. Step 6: Final answer
    x = 7,270.95

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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.