Home / 19,136.40-28,704.60-9,772.80

Finding the Fourth Proportional to 19,136.40, 28,704.60 and 9,772.80

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Solution

The fourth proportional to 19,136.40, 28,704.60 and 9,772.80 is: 14,659.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,136.40 : 28,704.60 = 9,772.80 : x
  2. Step 2: Convert to fraction form
    19,136.40/28,704.60 = 9,772.80/x
  3. Step 3: Cross multiply
    19,136.40x = 28,704.60 × 9,772.80
  4. Step 4: Simplify right side
    19,136.40x = 280,524,314.88
  5. Step 5: Solve for x
    x = 280,524,314.88/19,136.40
  6. Step 6: Final answer
    x = 14,659.20

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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.