Home / 35,279.76-48,673.56-20,161.40

Finding the Fourth Proportional to 35,279.76, 48,673.56 and 20,161.40

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Solution

The fourth proportional to 35,279.76, 48,673.56 and 20,161.40 is: 27,815.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,279.76 : 48,673.56 = 20,161.40 : x
  2. Step 2: Convert to fraction form
    35,279.76/48,673.56 = 20,161.40/x
  3. Step 3: Cross multiply
    35,279.76x = 48,673.56 × 20,161.40
  4. Step 4: Simplify right side
    35,279.76x = 981,327,112.58
  5. Step 5: Solve for x
    x = 981,327,112.58/35,279.76
  6. Step 6: Final answer
    x = 27,815.58

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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.