Home / 12,215.80-18,323.77-3,450.79

Finding the Fourth Proportional to 12,215.80, 18,323.77 and 3,450.79

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Solution

The fourth proportional to 12,215.80, 18,323.77 and 3,450.79 is: 5,176.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,215.80 : 18,323.77 = 3,450.79 : x
  2. Step 2: Convert to fraction form
    12,215.80/18,323.77 = 3,450.79/x
  3. Step 3: Cross multiply
    12,215.80x = 18,323.77 × 3,450.79
  4. Step 4: Simplify right side
    12,215.80x = 63,231,482.28
  5. Step 5: Solve for x
    x = 63,231,482.28/12,215.80
  6. Step 6: Final answer
    x = 5,176.20

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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.