Home / 28,121.88-42,185.70-10,606.44

Finding the Fourth Proportional to 28,121.88, 42,185.70 and 10,606.44

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Solution

The fourth proportional to 28,121.88, 42,185.70 and 10,606.44 is: 15,910.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,121.88 : 42,185.70 = 10,606.44 : x
  2. Step 2: Convert to fraction form
    28,121.88/42,185.70 = 10,606.44/x
  3. Step 3: Cross multiply
    28,121.88x = 42,185.70 × 10,606.44
  4. Step 4: Simplify right side
    28,121.88x = 447,440,095.91
  5. Step 5: Solve for x
    x = 447,440,095.91/28,121.88
  6. Step 6: Final answer
    x = 15,910.75

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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.