Home / 14,131.30-21,198.78-4,271.56

Finding the Fourth Proportional to 14,131.30, 21,198.78 and 4,271.56

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Solution

The fourth proportional to 14,131.30, 21,198.78 and 4,271.56 is: 6,407.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,131.30 : 21,198.78 = 4,271.56 : x
  2. Step 2: Convert to fraction form
    14,131.30/21,198.78 = 4,271.56/x
  3. Step 3: Cross multiply
    14,131.30x = 21,198.78 × 4,271.56
  4. Step 4: Simplify right side
    14,131.30x = 90,551,860.70
  5. Step 5: Solve for x
    x = 90,551,860.70/14,131.30
  6. Step 6: Final answer
    x = 6,407.89

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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.