Home / 28,028.40-38,693.40-18,474.54

Finding the Fourth Proportional to 28,028.40, 38,693.40 and 18,474.54

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Solution

The fourth proportional to 28,028.40, 38,693.40 and 18,474.54 is: 25,504.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,028.40 : 38,693.40 = 18,474.54 : x
  2. Step 2: Convert to fraction form
    28,028.40/38,693.40 = 18,474.54/x
  3. Step 3: Cross multiply
    28,028.40x = 38,693.40 × 18,474.54
  4. Step 4: Simplify right side
    28,028.40x = 714,842,766.04
  5. Step 5: Solve for x
    x = 714,842,766.04/28,028.40
  6. Step 6: Final answer
    x = 25,504.23

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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.