Home / 14,115.88-21,171.12-5,347.90

Finding the Fourth Proportional to 14,115.88, 21,171.12 and 5,347.90

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Solution

The fourth proportional to 14,115.88, 21,171.12 and 5,347.90 is: 8,020.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,115.88 : 21,171.12 = 5,347.90 : x
  2. Step 2: Convert to fraction form
    14,115.88/21,171.12 = 5,347.90/x
  3. Step 3: Cross multiply
    14,115.88x = 21,171.12 × 5,347.90
  4. Step 4: Simplify right side
    14,115.88x = 113,221,032.65
  5. Step 5: Solve for x
    x = 113,221,032.65/14,115.88
  6. Step 6: Final answer
    x = 8,020.83

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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.