Home / 21,768.68-30,043.31-12,211.19

Finding the Fourth Proportional to 21,768.68, 30,043.31 and 12,211.19

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Solution

The fourth proportional to 21,768.68, 30,043.31 and 12,211.19 is: 16,852.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,768.68 : 30,043.31 = 12,211.19 : x
  2. Step 2: Convert to fraction form
    21,768.68/30,043.31 = 12,211.19/x
  3. Step 3: Cross multiply
    21,768.68x = 30,043.31 × 12,211.19
  4. Step 4: Simplify right side
    21,768.68x = 366,864,468.03
  5. Step 5: Solve for x
    x = 366,864,468.03/21,768.68
  6. Step 6: Final answer
    x = 16,852.86

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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.