Home / 19,619.20-29,390.40-11,804.80

Finding the Fourth Proportional to 19,619.20, 29,390.40 and 11,804.80

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Solution

The fourth proportional to 19,619.20, 29,390.40 and 11,804.80 is: 17,684.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,619.20 : 29,390.40 = 11,804.80 : x
  2. Step 2: Convert to fraction form
    19,619.20/29,390.40 = 11,804.80/x
  3. Step 3: Cross multiply
    19,619.20x = 29,390.40 × 11,804.80
  4. Step 4: Simplify right side
    19,619.20x = 346,947,793.92
  5. Step 5: Solve for x
    x = 346,947,793.92/19,619.20
  6. Step 6: Final answer
    x = 17,684.09

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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.