Home / 21,985.83-32,921.64-18,467.73

Finding the Fourth Proportional to 21,985.83, 32,921.64 and 18,467.73

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Solution

The fourth proportional to 21,985.83, 32,921.64 and 18,467.73 is: 27,653.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,985.83 : 32,921.64 = 18,467.73 : x
  2. Step 2: Convert to fraction form
    21,985.83/32,921.64 = 18,467.73/x
  3. Step 3: Cross multiply
    21,985.83x = 32,921.64 × 18,467.73
  4. Step 4: Simplify right side
    21,985.83x = 607,987,958.68
  5. Step 5: Solve for x
    x = 607,987,958.68/21,985.83
  6. Step 6: Final answer
    x = 27,653.63

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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.