Home / 28,067.54-38,739.71-18,509.15

Finding the Fourth Proportional to 28,067.54, 38,739.71 and 18,509.15

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Solution

The fourth proportional to 28,067.54, 38,739.71 and 18,509.15 is: 25,546.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,067.54 : 38,739.71 = 18,509.15 : x
  2. Step 2: Convert to fraction form
    28,067.54/38,739.71 = 18,509.15/x
  3. Step 3: Cross multiply
    28,067.54x = 38,739.71 × 18,509.15
  4. Step 4: Simplify right side
    28,067.54x = 717,039,006.50
  5. Step 5: Solve for x
    x = 717,039,006.50/28,067.54
  6. Step 6: Final answer
    x = 25,546.91

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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.