Home / 28,670.65-42,980.04-10,198.33

Finding the Fourth Proportional to 28,670.65, 42,980.04 and 10,198.33

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Solution

The fourth proportional to 28,670.65, 42,980.04 and 10,198.33 is: 15,288.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,670.65 : 42,980.04 = 10,198.33 : x
  2. Step 2: Convert to fraction form
    28,670.65/42,980.04 = 10,198.33/x
  3. Step 3: Cross multiply
    28,670.65x = 42,980.04 × 10,198.33
  4. Step 4: Simplify right side
    28,670.65x = 438,324,523.88
  5. Step 5: Solve for x
    x = 438,324,523.88/28,670.65
  6. Step 6: Final answer
    x = 15,288.27

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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.