Home / 13,816.57-20,708.62-6,405.43

Finding the Fourth Proportional to 13,816.57, 20,708.62 and 6,405.43

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Solution

The fourth proportional to 13,816.57, 20,708.62 and 6,405.43 is: 9,600.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,816.57 : 20,708.62 = 6,405.43 : x
  2. Step 2: Convert to fraction form
    13,816.57/20,708.62 = 6,405.43/x
  3. Step 3: Cross multiply
    13,816.57x = 20,708.62 × 6,405.43
  4. Step 4: Simplify right side
    13,816.57x = 132,647,615.81
  5. Step 5: Solve for x
    x = 132,647,615.81/13,816.57
  6. Step 6: Final answer
    x = 9,600.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.