Home / 12,150.80-18,225.66-3,385.52

Finding the Fourth Proportional to 12,150.80, 18,225.66 and 3,385.52

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Solution

The fourth proportional to 12,150.80, 18,225.66 and 3,385.52 is: 5,078.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,150.80 : 18,225.66 = 3,385.52 : x
  2. Step 2: Convert to fraction form
    12,150.80/18,225.66 = 3,385.52/x
  3. Step 3: Cross multiply
    12,150.80x = 18,225.66 × 3,385.52
  4. Step 4: Simplify right side
    12,150.80x = 61,703,336.44
  5. Step 5: Solve for x
    x = 61,703,336.44/12,150.80
  6. Step 6: Final answer
    x = 5,078.13

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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.