Home / 21,949.84-30,290.92-12,873.35

Finding the Fourth Proportional to 21,949.84, 30,290.92 and 12,873.35

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Solution

The fourth proportional to 21,949.84, 30,290.92 and 12,873.35 is: 17,765.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,949.84 : 30,290.92 = 12,873.35 : x
  2. Step 2: Convert to fraction form
    21,949.84/30,290.92 = 12,873.35/x
  3. Step 3: Cross multiply
    21,949.84x = 30,290.92 × 12,873.35
  4. Step 4: Simplify right side
    21,949.84x = 389,945,614.98
  5. Step 5: Solve for x
    x = 389,945,614.98/21,949.84
  6. Step 6: Final answer
    x = 17,765.31

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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.