Home / 21,764.12-30,036.92-12,813.84

Finding the Fourth Proportional to 21,764.12, 30,036.92 and 12,813.84

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Solution

The fourth proportional to 21,764.12, 30,036.92 and 12,813.84 is: 17,684.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,764.12 : 30,036.92 = 12,813.84 : x
  2. Step 2: Convert to fraction form
    21,764.12/30,036.92 = 12,813.84/x
  3. Step 3: Cross multiply
    21,764.12x = 30,036.92 × 12,813.84
  4. Step 4: Simplify right side
    21,764.12x = 384,888,286.97
  5. Step 5: Solve for x
    x = 384,888,286.97/21,764.12
  6. Step 6: Final answer
    x = 17,684.53

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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.