Home / 28,719.42-43,081.47-7,942.92

Finding the Fourth Proportional to 28,719.42, 43,081.47 and 7,942.92

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Solution

The fourth proportional to 28,719.42, 43,081.47 and 7,942.92 is: 11,915.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,719.42 : 43,081.47 = 7,942.92 : x
  2. Step 2: Convert to fraction form
    28,719.42/43,081.47 = 7,942.92/x
  3. Step 3: Cross multiply
    28,719.42x = 43,081.47 × 7,942.92
  4. Step 4: Simplify right side
    28,719.42x = 342,192,669.69
  5. Step 5: Solve for x
    x = 342,192,669.69/28,719.42
  6. Step 6: Final answer
    x = 11,915.03

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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.