Home / 39,658.46-54,730.20-21,754.22

Finding the Fourth Proportional to 39,658.46, 54,730.20 and 21,754.22

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Solution

The fourth proportional to 39,658.46, 54,730.20 and 21,754.22 is: 30,021.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,658.46 : 54,730.20 = 21,754.22 : x
  2. Step 2: Convert to fraction form
    39,658.46/54,730.20 = 21,754.22/x
  3. Step 3: Cross multiply
    39,658.46x = 54,730.20 × 21,754.22
  4. Step 4: Simplify right side
    39,658.46x = 1,190,612,811.44
  5. Step 5: Solve for x
    x = 1,190,612,811.44/39,658.46
  6. Step 6: Final answer
    x = 30,021.66

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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.