Home / 20,188.24-27,855.58-12,231.16

Finding the Fourth Proportional to 20,188.24, 27,855.58 and 12,231.16

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Solution

The fourth proportional to 20,188.24, 27,855.58 and 12,231.16 is: 16,876.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,188.24 : 27,855.58 = 12,231.16 : x
  2. Step 2: Convert to fraction form
    20,188.24/27,855.58 = 12,231.16/x
  3. Step 3: Cross multiply
    20,188.24x = 27,855.58 × 12,231.16
  4. Step 4: Simplify right side
    20,188.24x = 340,706,055.87
  5. Step 5: Solve for x
    x = 340,706,055.87/20,188.24
  6. Step 6: Final answer
    x = 16,876.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.