Home / 20,839.37-31,249.59-8,987.54

Finding the Fourth Proportional to 20,839.37, 31,249.59 and 8,987.54

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Solution

The fourth proportional to 20,839.37, 31,249.59 and 8,987.54 is: 13,477.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,839.37 : 31,249.59 = 8,987.54 : x
  2. Step 2: Convert to fraction form
    20,839.37/31,249.59 = 8,987.54/x
  3. Step 3: Cross multiply
    20,839.37x = 31,249.59 × 8,987.54
  4. Step 4: Simplify right side
    20,839.37x = 280,856,750.16
  5. Step 5: Solve for x
    x = 280,856,750.16/20,839.37
  6. Step 6: Final answer
    x = 13,477.22

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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.