Home / 20,021.31-27,630.32-11,636.19

Finding the Fourth Proportional to 20,021.31, 27,630.32 and 11,636.19

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Solution

The fourth proportional to 20,021.31, 27,630.32 and 11,636.19 is: 16,058.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,021.31 : 27,630.32 = 11,636.19 : x
  2. Step 2: Convert to fraction form
    20,021.31/27,630.32 = 11,636.19/x
  3. Step 3: Cross multiply
    20,021.31x = 27,630.32 × 11,636.19
  4. Step 4: Simplify right side
    20,021.31x = 321,511,595.10
  5. Step 5: Solve for x
    x = 321,511,595.10/20,021.31
  6. Step 6: Final answer
    x = 16,058.47

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Half scale
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Double scale
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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.