Home / 12,125.80-18,188.70-3,359.98

Finding the Fourth Proportional to 12,125.80, 18,188.70 and 3,359.98

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Solution

The fourth proportional to 12,125.80, 18,188.70 and 3,359.98 is: 5,039.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,125.80 : 18,188.70 = 3,359.98 : x
  2. Step 2: Convert to fraction form
    12,125.80/18,188.70 = 3,359.98/x
  3. Step 3: Cross multiply
    12,125.80x = 18,188.70 × 3,359.98
  4. Step 4: Simplify right side
    12,125.80x = 61,113,668.23
  5. Step 5: Solve for x
    x = 61,113,668.23/12,125.80
  6. Step 6: Final answer
    x = 5,039.97

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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.