Home / 14,121.12-21,185.28-8,282.88

Finding the Fourth Proportional to 14,121.12, 21,185.28 and 8,282.88

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Solution

The fourth proportional to 14,121.12, 21,185.28 and 8,282.88 is: 12,426.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,121.12 : 21,185.28 = 8,282.88 : x
  2. Step 2: Convert to fraction form
    14,121.12/21,185.28 = 8,282.88/x
  3. Step 3: Cross multiply
    14,121.12x = 21,185.28 × 8,282.88
  4. Step 4: Simplify right side
    14,121.12x = 175,475,132.01
  5. Step 5: Solve for x
    x = 175,475,132.01/14,121.12
  6. Step 6: Final answer
    x = 12,426.43

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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.