Home / 27,145.27-40,704.54-12,909.79

Finding the Fourth Proportional to 27,145.27, 40,704.54 and 12,909.79

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Solution

The fourth proportional to 27,145.27, 40,704.54 and 12,909.79 is: 19,358.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,145.27 : 40,704.54 = 12,909.79 : x
  2. Step 2: Convert to fraction form
    27,145.27/40,704.54 = 12,909.79/x
  3. Step 3: Cross multiply
    27,145.27x = 40,704.54 × 12,909.79
  4. Step 4: Simplify right side
    27,145.27x = 525,487,063.45
  5. Step 5: Solve for x
    x = 525,487,063.45/27,145.27
  6. Step 6: Final answer
    x = 19,358.33

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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.