Home / 20,797.14-28,702.05-11,847.54

Finding the Fourth Proportional to 20,797.14, 28,702.05 and 11,847.54

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Solution

The fourth proportional to 20,797.14, 28,702.05 and 11,847.54 is: 16,350.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,797.14 : 28,702.05 = 11,847.54 : x
  2. Step 2: Convert to fraction form
    20,797.14/28,702.05 = 11,847.54/x
  3. Step 3: Cross multiply
    20,797.14x = 28,702.05 × 11,847.54
  4. Step 4: Simplify right side
    20,797.14x = 340,048,685.46
  5. Step 5: Solve for x
    x = 340,048,685.46/20,797.14
  6. Step 6: Final answer
    x = 16,350.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.