Home / 11,215.73-16,815.40-3,818.21

Finding the Fourth Proportional to 11,215.73, 16,815.40 and 3,818.21

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Solution

The fourth proportional to 11,215.73, 16,815.40 and 3,818.21 is: 5,724.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,215.73 : 16,815.40 = 3,818.21 : x
  2. Step 2: Convert to fraction form
    11,215.73/16,815.40 = 3,818.21/x
  3. Step 3: Cross multiply
    11,215.73x = 16,815.40 × 3,818.21
  4. Step 4: Simplify right side
    11,215.73x = 64,204,634.81
  5. Step 5: Solve for x
    x = 64,204,634.81/11,215.73
  6. Step 6: Final answer
    x = 5,724.52

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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.