Home / 21,818.57-30,102.44-12,741.84

Finding the Fourth Proportional to 21,818.57, 30,102.44 and 12,741.84

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Solution

The fourth proportional to 21,818.57, 30,102.44 and 12,741.84 is: 17,579.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,818.57 : 30,102.44 = 12,741.84 : x
  2. Step 2: Convert to fraction form
    21,818.57/30,102.44 = 12,741.84/x
  3. Step 3: Cross multiply
    21,818.57x = 30,102.44 × 12,741.84
  4. Step 4: Simplify right side
    21,818.57x = 383,560,410.38
  5. Step 5: Solve for x
    x = 383,560,410.38/21,818.57
  6. Step 6: Final answer
    x = 17,579.54

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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.