Home / 28,198.60-38,914.08-15,451.68

Finding the Fourth Proportional to 28,198.60, 38,914.08 and 15,451.68

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Solution

The fourth proportional to 28,198.60, 38,914.08 and 15,451.68 is: 21,323.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,198.60 : 38,914.08 = 15,451.68 : x
  2. Step 2: Convert to fraction form
    28,198.60/38,914.08 = 15,451.68/x
  3. Step 3: Cross multiply
    28,198.60x = 38,914.08 × 15,451.68
  4. Step 4: Simplify right side
    28,198.60x = 601,287,911.65
  5. Step 5: Solve for x
    x = 601,287,911.65/28,198.60
  6. Step 6: Final answer
    x = 21,323.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.