Home / 20,658.26-28,506.75-12,160.73

Finding the Fourth Proportional to 20,658.26, 28,506.75 and 12,160.73

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Solution

The fourth proportional to 20,658.26, 28,506.75 and 12,160.73 is: 16,780.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,658.26 : 28,506.75 = 12,160.73 : x
  2. Step 2: Convert to fraction form
    20,658.26/28,506.75 = 12,160.73/x
  3. Step 3: Cross multiply
    20,658.26x = 28,506.75 × 12,160.73
  4. Step 4: Simplify right side
    20,658.26x = 346,662,889.93
  5. Step 5: Solve for x
    x = 346,662,889.93/20,658.26
  6. Step 6: Final answer
    x = 16,780.84

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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.