Home / 12,188.32-18,282.65-4,291.09

Finding the Fourth Proportional to 12,188.32, 18,282.65 and 4,291.09

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Solution

The fourth proportional to 12,188.32, 18,282.65 and 4,291.09 is: 6,436.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,188.32 : 18,282.65 = 4,291.09 : x
  2. Step 2: Convert to fraction form
    12,188.32/18,282.65 = 4,291.09/x
  3. Step 3: Cross multiply
    12,188.32x = 18,282.65 × 4,291.09
  4. Step 4: Simplify right side
    12,188.32x = 78,452,429.43
  5. Step 5: Solve for x
    x = 78,452,429.43/12,188.32
  6. Step 6: Final answer
    x = 6,436.69

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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.