Home / 12,668.87-19,003.58-3,903.77

Finding the Fourth Proportional to 12,668.87, 19,003.58 and 3,903.77

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Solution

The fourth proportional to 12,668.87, 19,003.58 and 3,903.77 is: 5,855.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,668.87 : 19,003.58 = 3,903.77 : x
  2. Step 2: Convert to fraction form
    12,668.87/19,003.58 = 3,903.77/x
  3. Step 3: Cross multiply
    12,668.87x = 19,003.58 × 3,903.77
  4. Step 4: Simplify right side
    12,668.87x = 74,185,605.50
  5. Step 5: Solve for x
    x = 74,185,605.50/12,668.87
  6. Step 6: Final answer
    x = 5,855.74

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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.