Home / 39,659.34-54,731.07-21,755.46

Finding the Fourth Proportional to 39,659.34, 54,731.07 and 21,755.46

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Solution

The fourth proportional to 39,659.34, 54,731.07 and 21,755.46 is: 30,023.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,659.34 : 54,731.07 = 21,755.46 : x
  2. Step 2: Convert to fraction form
    39,659.34/54,731.07 = 21,755.46/x
  3. Step 3: Cross multiply
    39,659.34x = 54,731.07 × 21,755.46
  4. Step 4: Simplify right side
    39,659.34x = 1,190,699,604.14
  5. Step 5: Solve for x
    x = 1,190,699,604.14/39,659.34
  6. Step 6: Final answer
    x = 30,023.18

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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.