Home / 21,249.23-31,873.07-8,759.87

Finding the Fourth Proportional to 21,249.23, 31,873.07 and 8,759.87

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Solution

The fourth proportional to 21,249.23, 31,873.07 and 8,759.87 is: 13,139.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,249.23 : 31,873.07 = 8,759.87 : x
  2. Step 2: Convert to fraction form
    21,249.23/31,873.07 = 8,759.87/x
  3. Step 3: Cross multiply
    21,249.23x = 31,873.07 × 8,759.87
  4. Step 4: Simplify right side
    21,249.23x = 279,203,746.54
  5. Step 5: Solve for x
    x = 279,203,746.54/21,249.23
  6. Step 6: Final answer
    x = 13,139.48

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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.