Home / 12,611.66-18,917.64-4,291.85

Finding the Fourth Proportional to 12,611.66, 18,917.64 and 4,291.85

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Solution

The fourth proportional to 12,611.66, 18,917.64 and 4,291.85 is: 6,437.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,611.66 : 18,917.64 = 4,291.85 : x
  2. Step 2: Convert to fraction form
    12,611.66/18,917.64 = 4,291.85/x
  3. Step 3: Cross multiply
    12,611.66x = 18,917.64 × 4,291.85
  4. Step 4: Simplify right side
    12,611.66x = 81,191,578.65
  5. Step 5: Solve for x
    x = 81,191,578.65/12,611.66
  6. Step 6: Final answer
    x = 6,437.82

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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.