Home / 19,289.20-28,928.40-6,145.60

Finding the Fourth Proportional to 19,289.20, 28,928.40 and 6,145.60

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Solution

The fourth proportional to 19,289.20, 28,928.40 and 6,145.60 is: 9,216.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,289.20 : 28,928.40 = 6,145.60 : x
  2. Step 2: Convert to fraction form
    19,289.20/28,928.40 = 6,145.60/x
  3. Step 3: Cross multiply
    19,289.20x = 28,928.40 × 6,145.60
  4. Step 4: Simplify right side
    19,289.20x = 177,782,375.04
  5. Step 5: Solve for x
    x = 177,782,375.04/19,289.20
  6. Step 6: Final answer
    x = 9,216.68

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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.