Home / 40,105.70-55,346.55-21,958.01

Finding the Fourth Proportional to 40,105.70, 55,346.55 and 21,958.01

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Solution

The fourth proportional to 40,105.70, 55,346.55 and 21,958.01 is: 30,302.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,105.70 : 55,346.55 = 21,958.01 : x
  2. Step 2: Convert to fraction form
    40,105.70/55,346.55 = 21,958.01/x
  3. Step 3: Cross multiply
    40,105.70x = 55,346.55 × 21,958.01
  4. Step 4: Simplify right side
    40,105.70x = 1,215,300,098.37
  5. Step 5: Solve for x
    x = 1,215,300,098.37/40,105.70
  6. Step 6: Final answer
    x = 30,302.43

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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.