Home / 27,145.80-40,718.70-12,383.55

Finding the Fourth Proportional to 27,145.80, 40,718.70 and 12,383.55

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Solution

The fourth proportional to 27,145.80, 40,718.70 and 12,383.55 is: 18,575.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,145.80 : 40,718.70 = 12,383.55 : x
  2. Step 2: Convert to fraction form
    27,145.80/40,718.70 = 12,383.55/x
  3. Step 3: Cross multiply
    27,145.80x = 40,718.70 × 12,383.55
  4. Step 4: Simplify right side
    27,145.80x = 504,242,057.39
  5. Step 5: Solve for x
    x = 504,242,057.39/27,145.80
  6. Step 6: Final answer
    x = 18,575.33

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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.