Home / 39,865.11-55,014.30-21,959.73

Finding the Fourth Proportional to 39,865.11, 55,014.30 and 21,959.73

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Solution

The fourth proportional to 39,865.11, 55,014.30 and 21,959.73 is: 30,304.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,865.11 : 55,014.30 = 21,959.73 : x
  2. Step 2: Convert to fraction form
    39,865.11/55,014.30 = 21,959.73/x
  3. Step 3: Cross multiply
    39,865.11x = 55,014.30 × 21,959.73
  4. Step 4: Simplify right side
    39,865.11x = 1,208,099,174.14
  5. Step 5: Solve for x
    x = 1,208,099,174.14/39,865.11
  6. Step 6: Final answer
    x = 30,304.67

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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.