Home / 11,940.10-17,910.30-3,620.20

Finding the Fourth Proportional to 11,940.10, 17,910.30 and 3,620.20

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Solution

The fourth proportional to 11,940.10, 17,910.30 and 3,620.20 is: 5,430.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,940.10 : 17,910.30 = 3,620.20 : x
  2. Step 2: Convert to fraction form
    11,940.10/17,910.30 = 3,620.20/x
  3. Step 3: Cross multiply
    11,940.10x = 17,910.30 × 3,620.20
  4. Step 4: Simplify right side
    11,940.10x = 64,838,868.06
  5. Step 5: Solve for x
    x = 64,838,868.06/11,940.10
  6. Step 6: Final answer
    x = 5,430.35

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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.