Home / 14,514.20-21,771.30-7,119.80

Finding the Fourth Proportional to 14,514.20, 21,771.30 and 7,119.80

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Solution

The fourth proportional to 14,514.20, 21,771.30 and 7,119.80 is: 10,679.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,514.20 : 21,771.30 = 7,119.80 : x
  2. Step 2: Convert to fraction form
    14,514.20/21,771.30 = 7,119.80/x
  3. Step 3: Cross multiply
    14,514.20x = 21,771.30 × 7,119.80
  4. Step 4: Simplify right side
    14,514.20x = 155,007,301.74
  5. Step 5: Solve for x
    x = 155,007,301.74/14,514.20
  6. Step 6: Final answer
    x = 10,679.70

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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.