Home / 28,111.65-38,825.97-19,143.59

Finding the Fourth Proportional to 28,111.65, 38,825.97 and 19,143.59

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Solution

The fourth proportional to 28,111.65, 38,825.97 and 19,143.59 is: 26,439.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,111.65 : 38,825.97 = 19,143.59 : x
  2. Step 2: Convert to fraction form
    28,111.65/38,825.97 = 19,143.59/x
  3. Step 3: Cross multiply
    28,111.65x = 38,825.97 × 19,143.59
  4. Step 4: Simplify right side
    28,111.65x = 743,268,451.03
  5. Step 5: Solve for x
    x = 743,268,451.03/28,111.65
  6. Step 6: Final answer
    x = 26,439.87

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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.