Home / 20,668.92-28,525.57-12,285.42

Finding the Fourth Proportional to 20,668.92, 28,525.57 and 12,285.42

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Solution

The fourth proportional to 20,668.92, 28,525.57 and 12,285.42 is: 16,955.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,668.92 : 28,525.57 = 12,285.42 : x
  2. Step 2: Convert to fraction form
    20,668.92/28,525.57 = 12,285.42/x
  3. Step 3: Cross multiply
    20,668.92x = 28,525.57 × 12,285.42
  4. Step 4: Simplify right side
    20,668.92x = 350,448,630.96
  5. Step 5: Solve for x
    x = 350,448,630.96/20,668.92
  6. Step 6: Final answer
    x = 16,955.34

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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.