Home / 19,255.62-28,870.96-12,661.80

Finding the Fourth Proportional to 19,255.62, 28,870.96 and 12,661.80

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Solution

The fourth proportional to 19,255.62, 28,870.96 and 12,661.80 is: 18,984.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,255.62 : 28,870.96 = 12,661.80 : x
  2. Step 2: Convert to fraction form
    19,255.62/28,870.96 = 12,661.80/x
  3. Step 3: Cross multiply
    19,255.62x = 28,870.96 × 12,661.80
  4. Step 4: Simplify right side
    19,255.62x = 365,558,321.33
  5. Step 5: Solve for x
    x = 365,558,321.33/19,255.62
  6. Step 6: Final answer
    x = 18,984.50

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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.