Home / 13,817.80-20,729.88-3,957.16

Finding the Fourth Proportional to 13,817.80, 20,729.88 and 3,957.16

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Solution

The fourth proportional to 13,817.80, 20,729.88 and 3,957.16 is: 5,936.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,817.80 : 20,729.88 = 3,957.16 : x
  2. Step 2: Convert to fraction form
    13,817.80/20,729.88 = 3,957.16/x
  3. Step 3: Cross multiply
    13,817.80x = 20,729.88 × 3,957.16
  4. Step 4: Simplify right side
    13,817.80x = 82,031,451.94
  5. Step 5: Solve for x
    x = 82,031,451.94/13,817.80
  6. Step 6: Final answer
    x = 5,936.65

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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.