Home / 13,422.16-20,136.84-5,628.88

Finding the Fourth Proportional to 13,422.16, 20,136.84 and 5,628.88

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Solution

The fourth proportional to 13,422.16, 20,136.84 and 5,628.88 is: 8,444.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,422.16 : 20,136.84 = 5,628.88 : x
  2. Step 2: Convert to fraction form
    13,422.16/20,136.84 = 5,628.88/x
  3. Step 3: Cross multiply
    13,422.16x = 20,136.84 × 5,628.88
  4. Step 4: Simplify right side
    13,422.16x = 113,347,855.94
  5. Step 5: Solve for x
    x = 113,347,855.94/13,422.16
  6. Step 6: Final answer
    x = 8,444.83

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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.