Home / 27,990.62-38,625.27-15,415.37

Finding the Fourth Proportional to 27,990.62, 38,625.27 and 15,415.37

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Solution

The fourth proportional to 27,990.62, 38,625.27 and 15,415.37 is: 21,272.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,990.62 : 38,625.27 = 15,415.37 : x
  2. Step 2: Convert to fraction form
    27,990.62/38,625.27 = 15,415.37/x
  3. Step 3: Cross multiply
    27,990.62x = 38,625.27 × 15,415.37
  4. Step 4: Simplify right side
    27,990.62x = 595,422,635.27
  5. Step 5: Solve for x
    x = 595,422,635.27/27,990.62
  6. Step 6: Final answer
    x = 21,272.22

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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.