Home / 20,679.45-28,542.87-11,732.28

Finding the Fourth Proportional to 20,679.45, 28,542.87 and 11,732.28

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Solution

The fourth proportional to 20,679.45, 28,542.87 and 11,732.28 is: 16,193.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679.45 : 28,542.87 = 11,732.28 : x
  2. Step 2: Convert to fraction form
    20,679.45/28,542.87 = 11,732.28/x
  3. Step 3: Cross multiply
    20,679.45x = 28,542.87 × 11,732.28
  4. Step 4: Simplify right side
    20,679.45x = 334,872,942.84
  5. Step 5: Solve for x
    x = 334,872,942.84/20,679.45
  6. Step 6: Final answer
    x = 16,193.51

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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.