Home / 33,062.76-45,615.51-18,720.63

Finding the Fourth Proportional to 33,062.76, 45,615.51 and 18,720.63

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Solution

The fourth proportional to 33,062.76, 45,615.51 and 18,720.63 is: 25,828.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,062.76 : 45,615.51 = 18,720.63 : x
  2. Step 2: Convert to fraction form
    33,062.76/45,615.51 = 18,720.63/x
  3. Step 3: Cross multiply
    33,062.76x = 45,615.51 × 18,720.63
  4. Step 4: Simplify right side
    33,062.76x = 853,951,084.97
  5. Step 5: Solve for x
    x = 853,951,084.97/33,062.76
  6. Step 6: Final answer
    x = 25,828.19

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Double scale
Find fourth proportional to 33,063.76, 45,616.89 and 18,721.63
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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.