Home / 14,121.60-21,179.16-4,260.84

Finding the Fourth Proportional to 14,121.60, 21,179.16 and 4,260.84

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Solution

The fourth proportional to 14,121.60, 21,179.16 and 4,260.84 is: 6,390.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,121.60 : 21,179.16 = 4,260.84 : x
  2. Step 2: Convert to fraction form
    14,121.60/21,179.16 = 4,260.84/x
  3. Step 3: Cross multiply
    14,121.60x = 21,179.16 × 4,260.84
  4. Step 4: Simplify right side
    14,121.60x = 90,241,012.09
  5. Step 5: Solve for x
    x = 90,241,012.09/14,121.60
  6. Step 6: Final answer
    x = 6,390.28

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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.