Home / 19,136.07-28,698.90-12,105.53

Finding the Fourth Proportional to 19,136.07, 28,698.90 and 12,105.53

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Solution

The fourth proportional to 19,136.07, 28,698.90 and 12,105.53 is: 18,155.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,136.07 : 28,698.90 = 12,105.53 : x
  2. Step 2: Convert to fraction form
    19,136.07/28,698.90 = 12,105.53/x
  3. Step 3: Cross multiply
    19,136.07x = 28,698.90 × 12,105.53
  4. Step 4: Simplify right side
    19,136.07x = 347,415,394.92
  5. Step 5: Solve for x
    x = 347,415,394.92/19,136.07
  6. Step 6: Final answer
    x = 18,155.00

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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.