Home / 14,131.80-21,207.30-7,891.80

Finding the Fourth Proportional to 14,131.80, 21,207.30 and 7,891.80

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Solution

The fourth proportional to 14,131.80, 21,207.30 and 7,891.80 is: 11,843.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,131.80 : 21,207.30 = 7,891.80 : x
  2. Step 2: Convert to fraction form
    14,131.80/21,207.30 = 7,891.80/x
  3. Step 3: Cross multiply
    14,131.80x = 21,207.30 × 7,891.80
  4. Step 4: Simplify right side
    14,131.80x = 167,363,770.14
  5. Step 5: Solve for x
    x = 167,363,770.14/14,131.80
  6. Step 6: Final answer
    x = 11,843.06

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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.