Home / 28,855.89-43,291.80-12,207.15

Finding the Fourth Proportional to 28,855.89, 43,291.80 and 12,207.15

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Solution

The fourth proportional to 28,855.89, 43,291.80 and 12,207.15 is: 18,314.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,855.89 : 43,291.80 = 12,207.15 : x
  2. Step 2: Convert to fraction form
    28,855.89/43,291.80 = 12,207.15/x
  3. Step 3: Cross multiply
    28,855.89x = 43,291.80 × 12,207.15
  4. Step 4: Simplify right side
    28,855.89x = 528,469,496.37
  5. Step 5: Solve for x
    x = 528,469,496.37/28,855.89
  6. Step 6: Final answer
    x = 18,314.09

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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.