Home / 20,764.38-28,653.93-11,812.62

Finding the Fourth Proportional to 20,764.38, 28,653.93 and 11,812.62

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Solution

The fourth proportional to 20,764.38, 28,653.93 and 11,812.62 is: 16,300.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,764.38 : 28,653.93 = 11,812.62 : x
  2. Step 2: Convert to fraction form
    20,764.38/28,653.93 = 11,812.62/x
  3. Step 3: Cross multiply
    20,764.38x = 28,653.93 × 11,812.62
  4. Step 4: Simplify right side
    20,764.38x = 338,477,986.60
  5. Step 5: Solve for x
    x = 338,477,986.60/20,764.38
  6. Step 6: Final answer
    x = 16,300.90

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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.