Home / 39,812.36-54,942.36-21,908.66

Finding the Fourth Proportional to 39,812.36, 54,942.36 and 21,908.66

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Solution

The fourth proportional to 39,812.36, 54,942.36 and 21,908.66 is: 30,234.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,812.36 : 54,942.36 = 21,908.66 : x
  2. Step 2: Convert to fraction form
    39,812.36/54,942.36 = 21,908.66/x
  3. Step 3: Cross multiply
    39,812.36x = 54,942.36 × 21,908.66
  4. Step 4: Simplify right side
    39,812.36x = 1,203,713,484.84
  5. Step 5: Solve for x
    x = 1,203,713,484.84/39,812.36
  6. Step 6: Final answer
    x = 30,234.67

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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.