Home / 14,198.40-21,305.70-5,439.60

Finding the Fourth Proportional to 14,198.40, 21,305.70 and 5,439.60

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Solution

The fourth proportional to 14,198.40, 21,305.70 and 5,439.60 is: 8,162.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,198.40 : 21,305.70 = 5,439.60 : x
  2. Step 2: Convert to fraction form
    14,198.40/21,305.70 = 5,439.60/x
  3. Step 3: Cross multiply
    14,198.40x = 21,305.70 × 5,439.60
  4. Step 4: Simplify right side
    14,198.40x = 115,894,485.72
  5. Step 5: Solve for x
    x = 115,894,485.72/14,198.40
  6. Step 6: Final answer
    x = 8,162.50

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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.