Home / 21,858.12-32,756.67-19,219.14

Finding the Fourth Proportional to 21,858.12, 32,756.67 and 19,219.14

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Solution

The fourth proportional to 21,858.12, 32,756.67 and 19,219.14 is: 28,801.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,858.12 : 32,756.67 = 19,219.14 : x
  2. Step 2: Convert to fraction form
    21,858.12/32,756.67 = 19,219.14/x
  3. Step 3: Cross multiply
    21,858.12x = 32,756.67 × 19,219.14
  4. Step 4: Simplify right side
    21,858.12x = 629,555,026.66
  5. Step 5: Solve for x
    x = 629,555,026.66/21,858.12
  6. Step 6: Final answer
    x = 28,801.88

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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.