Home / 28,381.86-39,175.45-16,450.56

Finding the Fourth Proportional to 28,381.86, 39,175.45 and 16,450.56

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Solution

The fourth proportional to 28,381.86, 39,175.45 and 16,450.56 is: 22,706.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,381.86 : 39,175.45 = 16,450.56 : x
  2. Step 2: Convert to fraction form
    28,381.86/39,175.45 = 16,450.56/x
  3. Step 3: Cross multiply
    28,381.86x = 39,175.45 × 16,450.56
  4. Step 4: Simplify right side
    28,381.86x = 644,458,049.63
  5. Step 5: Solve for x
    x = 644,458,049.63/28,381.86
  6. Step 6: Final answer
    x = 22,706.69

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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.