Home / 20,400.30-30,600.45-19,622.70

Finding the Fourth Proportional to 20,400.30, 30,600.45 and 19,622.70

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Solution

The fourth proportional to 20,400.30, 30,600.45 and 19,622.70 is: 29,434.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,400.30 : 30,600.45 = 19,622.70 : x
  2. Step 2: Convert to fraction form
    20,400.30/30,600.45 = 19,622.70/x
  3. Step 3: Cross multiply
    20,400.30x = 30,600.45 × 19,622.70
  4. Step 4: Simplify right side
    20,400.30x = 600,463,450.22
  5. Step 5: Solve for x
    x = 600,463,450.22/20,400.30
  6. Step 6: Final answer
    x = 29,434.05

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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.