Home / 20,682.45-28,542.42-11,730.33

Finding the Fourth Proportional to 20,682.45, 28,542.42 and 11,730.33

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Solution

The fourth proportional to 20,682.45, 28,542.42 and 11,730.33 is: 16,188.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,682.45 : 28,542.42 = 11,730.33 : x
  2. Step 2: Convert to fraction form
    20,682.45/28,542.42 = 11,730.33/x
  3. Step 3: Cross multiply
    20,682.45x = 28,542.42 × 11,730.33
  4. Step 4: Simplify right side
    20,682.45x = 334,812,005.60
  5. Step 5: Solve for x
    x = 334,812,005.60/20,682.45
  6. Step 6: Final answer
    x = 16,188.22

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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.