Home / 21,181.44-31,759.74-18,063.12

Finding the Fourth Proportional to 21,181.44, 31,759.74 and 18,063.12

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Solution

The fourth proportional to 21,181.44, 31,759.74 and 18,063.12 is: 27,084.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,181.44 : 31,759.74 = 18,063.12 : x
  2. Step 2: Convert to fraction form
    21,181.44/31,759.74 = 18,063.12/x
  3. Step 3: Cross multiply
    21,181.44x = 31,759.74 × 18,063.12
  4. Step 4: Simplify right side
    21,181.44x = 573,679,994.79
  5. Step 5: Solve for x
    x = 573,679,994.79/21,181.44
  6. Step 6: Final answer
    x = 27,084.09

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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.