Home / 20,221.10-27,998.43-19,832.30

Finding the Fourth Proportional to 20,221.10, 27,998.43 and 19,832.30

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Solution

The fourth proportional to 20,221.10, 27,998.43 and 19,832.30 is: 27,460.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,221.10 : 27,998.43 = 19,832.30 : x
  2. Step 2: Convert to fraction form
    20,221.10/27,998.43 = 19,832.30/x
  3. Step 3: Cross multiply
    20,221.10x = 27,998.43 × 19,832.30
  4. Step 4: Simplify right side
    20,221.10x = 555,273,263.29
  5. Step 5: Solve for x
    x = 555,273,263.29/20,221.10
  6. Step 6: Final answer
    x = 27,460.09

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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.