Home / 13,816.39-20,718.49-3,953.43

Finding the Fourth Proportional to 13,816.39, 20,718.49 and 3,953.43

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Solution

The fourth proportional to 13,816.39, 20,718.49 and 3,953.43 is: 5,928.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,816.39 : 20,718.49 = 3,953.43 : x
  2. Step 2: Convert to fraction form
    13,816.39/20,718.49 = 3,953.43/x
  3. Step 3: Cross multiply
    13,816.39x = 20,718.49 × 3,953.43
  4. Step 4: Simplify right side
    13,816.39x = 81,909,099.92
  5. Step 5: Solve for x
    x = 81,909,099.92/13,816.39
  6. Step 6: Final answer
    x = 5,928.40

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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.