Home / 14,126.68-21,191.88-5,240.80

Finding the Fourth Proportional to 14,126.68, 21,191.88 and 5,240.80

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Solution

The fourth proportional to 14,126.68, 21,191.88 and 5,240.80 is: 7,861.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,126.68 : 21,191.88 = 5,240.80 : x
  2. Step 2: Convert to fraction form
    14,126.68/21,191.88 = 5,240.80/x
  3. Step 3: Cross multiply
    14,126.68x = 21,191.88 × 5,240.80
  4. Step 4: Simplify right side
    14,126.68x = 111,062,404.70
  5. Step 5: Solve for x
    x = 111,062,404.70/14,126.68
  6. Step 6: Final answer
    x = 7,861.89

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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.