Home / 20,812.60-28,713.18-11,735.92

Finding the Fourth Proportional to 20,812.60, 28,713.18 and 11,735.92

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Solution

The fourth proportional to 20,812.60, 28,713.18 and 11,735.92 is: 16,190.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,812.60 : 28,713.18 = 11,735.92 : x
  2. Step 2: Convert to fraction form
    20,812.60/28,713.18 = 11,735.92/x
  3. Step 3: Cross multiply
    20,812.60x = 28,713.18 × 11,735.92
  4. Step 4: Simplify right side
    20,812.60x = 336,975,583.43
  5. Step 5: Solve for x
    x = 336,975,583.43/20,812.60
  6. Step 6: Final answer
    x = 16,190.94

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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.