Home / 33,018.38-45,537.64-21,679.18

Finding the Fourth Proportional to 33,018.38, 45,537.64 and 21,679.18

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Solution

The fourth proportional to 33,018.38, 45,537.64 and 21,679.18 is: 29,899.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,018.38 : 45,537.64 = 21,679.18 : x
  2. Step 2: Convert to fraction form
    33,018.38/45,537.64 = 21,679.18/x
  3. Step 3: Cross multiply
    33,018.38x = 45,537.64 × 21,679.18
  4. Step 4: Simplify right side
    33,018.38x = 987,218,694.34
  5. Step 5: Solve for x
    x = 987,218,694.34/33,018.38
  6. Step 6: Final answer
    x = 29,899.07

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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.