Home / 39,660.30-54,734.67-21,758.76

Finding the Fourth Proportional to 39,660.30, 54,734.67 and 21,758.76

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Solution

The fourth proportional to 39,660.30, 54,734.67 and 21,758.76 is: 30,028.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,660.30 : 54,734.67 = 21,758.76 : x
  2. Step 2: Convert to fraction form
    39,660.30/54,734.67 = 21,758.76/x
  3. Step 3: Cross multiply
    39,660.30x = 54,734.67 × 21,758.76
  4. Step 4: Simplify right side
    39,660.30x = 1,190,958,548.21
  5. Step 5: Solve for x
    x = 1,190,958,548.21/39,660.30
  6. Step 6: Final answer
    x = 30,028.98

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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.