Home / 20,254.05-27,950.67-12,290.94

Finding the Fourth Proportional to 20,254.05, 27,950.67 and 12,290.94

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Solution

The fourth proportional to 20,254.05, 27,950.67 and 12,290.94 is: 16,961.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,254.05 : 27,950.67 = 12,290.94 : x
  2. Step 2: Convert to fraction form
    20,254.05/27,950.67 = 12,290.94/x
  3. Step 3: Cross multiply
    20,254.05x = 27,950.67 × 12,290.94
  4. Step 4: Simplify right side
    20,254.05x = 343,540,007.93
  5. Step 5: Solve for x
    x = 343,540,007.93/20,254.05
  6. Step 6: Final answer
    x = 16,961.55

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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.