Home / 20,766.34-28,654.44-11,690.38

Finding the Fourth Proportional to 20,766.34, 28,654.44 and 11,690.38

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Solution

The fourth proportional to 20,766.34, 28,654.44 and 11,690.38 is: 16,130.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,766.34 : 28,654.44 = 11,690.38 : x
  2. Step 2: Convert to fraction form
    20,766.34/28,654.44 = 11,690.38/x
  3. Step 3: Cross multiply
    20,766.34x = 28,654.44 × 11,690.38
  4. Step 4: Simplify right side
    20,766.34x = 334,981,188.84
  5. Step 5: Solve for x
    x = 334,981,188.84/20,766.34
  6. Step 6: Final answer
    x = 16,130.97

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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.