Home / 14,279.45-21,419.17-3,891.20

Finding the Fourth Proportional to 14,279.45, 21,419.17 and 3,891.20

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Solution

The fourth proportional to 14,279.45, 21,419.17 and 3,891.20 is: 5,836.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,279.45 : 21,419.17 = 3,891.20 : x
  2. Step 2: Convert to fraction form
    14,279.45/21,419.17 = 3,891.20/x
  3. Step 3: Cross multiply
    14,279.45x = 21,419.17 × 3,891.20
  4. Step 4: Simplify right side
    14,279.45x = 83,346,274.30
  5. Step 5: Solve for x
    x = 83,346,274.30/14,279.45
  6. Step 6: Final answer
    x = 5,836.80

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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.