Home / 20,296.50-30,453.87-12,899.04

Finding the Fourth Proportional to 20,296.50, 30,453.87 and 12,899.04

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Solution

The fourth proportional to 20,296.50, 30,453.87 and 12,899.04 is: 19,354.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,296.50 : 30,453.87 = 12,899.04 : x
  2. Step 2: Convert to fraction form
    20,296.50/30,453.87 = 12,899.04/x
  3. Step 3: Cross multiply
    20,296.50x = 30,453.87 × 12,899.04
  4. Step 4: Simplify right side
    20,296.50x = 392,825,687.28
  5. Step 5: Solve for x
    x = 392,825,687.28/20,296.50
  6. Step 6: Final answer
    x = 19,354.36

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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.