Home / 21,636.21-32,388.57-19,317.99

Finding the Fourth Proportional to 21,636.21, 32,388.57 and 19,317.99

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Solution

The fourth proportional to 21,636.21, 32,388.57 and 19,317.99 is: 28,918.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,636.21 : 32,388.57 = 19,317.99 : x
  2. Step 2: Convert to fraction form
    21,636.21/32,388.57 = 19,317.99/x
  3. Step 3: Cross multiply
    21,636.21x = 32,388.57 × 19,317.99
  4. Step 4: Simplify right side
    21,636.21x = 625,682,071.37
  5. Step 5: Solve for x
    x = 625,682,071.37/21,636.21
  6. Step 6: Final answer
    x = 28,918.28

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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.