Home / 14,279.20-21,420.08-3,891.04

Finding the Fourth Proportional to 14,279.20, 21,420.08 and 3,891.04

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Solution

The fourth proportional to 14,279.20, 21,420.08 and 3,891.04 is: 5,836.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,279.20 : 21,420.08 = 3,891.04 : x
  2. Step 2: Convert to fraction form
    14,279.20/21,420.08 = 3,891.04/x
  3. Step 3: Cross multiply
    14,279.20x = 21,420.08 × 3,891.04
  4. Step 4: Simplify right side
    14,279.20x = 83,346,388.08
  5. Step 5: Solve for x
    x = 83,346,388.08/14,279.20
  6. Step 6: Final answer
    x = 5,836.91

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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.