Home / 10,121.45-15,185.15-5,194.53

Finding the Fourth Proportional to 10,121.45, 15,185.15 and 5,194.53

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Solution

The fourth proportional to 10,121.45, 15,185.15 and 5,194.53 is: 7,793.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,121.45 : 15,185.15 = 5,194.53 : x
  2. Step 2: Convert to fraction form
    10,121.45/15,185.15 = 5,194.53/x
  3. Step 3: Cross multiply
    10,121.45x = 15,185.15 × 5,194.53
  4. Step 4: Simplify right side
    10,121.45x = 78,879,717.23
  5. Step 5: Solve for x
    x = 78,879,717.23/10,121.45
  6. Step 6: Final answer
    x = 7,793.32

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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.