Home / 19,137.12-28,702.44-5,286.12

Finding the Fourth Proportional to 19,137.12, 28,702.44 and 5,286.12

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Solution

The fourth proportional to 19,137.12, 28,702.44 and 5,286.12 is: 7,928.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,137.12 : 28,702.44 = 5,286.12 : x
  2. Step 2: Convert to fraction form
    19,137.12/28,702.44 = 5,286.12/x
  3. Step 3: Cross multiply
    19,137.12x = 28,702.44 × 5,286.12
  4. Step 4: Simplify right side
    19,137.12x = 151,724,542.13
  5. Step 5: Solve for x
    x = 151,724,542.13/19,137.12
  6. Step 6: Final answer
    x = 7,928.29

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1.5x scale

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.