Home / 21,253.81-31,836.97-12,467.54

Finding the Fourth Proportional to 21,253.81, 31,836.97 and 12,467.54

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Solution

The fourth proportional to 21,253.81, 31,836.97 and 12,467.54 is: 18,675.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,253.81 : 31,836.97 = 12,467.54 : x
  2. Step 2: Convert to fraction form
    21,253.81/31,836.97 = 12,467.54/x
  3. Step 3: Cross multiply
    21,253.81x = 31,836.97 × 12,467.54
  4. Step 4: Simplify right side
    21,253.81x = 396,928,634.62
  5. Step 5: Solve for x
    x = 396,928,634.62/21,253.81
  6. Step 6: Final answer
    x = 18,675.65

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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.