Home / 28,718.12-43,078.54-7,941.62

Finding the Fourth Proportional to 28,718.12, 43,078.54 and 7,941.62

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Solution

The fourth proportional to 28,718.12, 43,078.54 and 7,941.62 is: 11,912.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,718.12 : 43,078.54 = 7,941.62 : x
  2. Step 2: Convert to fraction form
    28,718.12/43,078.54 = 7,941.62/x
  3. Step 3: Cross multiply
    28,718.12x = 43,078.54 × 7,941.62
  4. Step 4: Simplify right side
    28,718.12x = 342,113,394.83
  5. Step 5: Solve for x
    x = 342,113,394.83/28,718.12
  6. Step 6: Final answer
    x = 11,912.81

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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.