Home / 28,718.19-43,078.10-7,941.69

Finding the Fourth Proportional to 28,718.19, 43,078.10 and 7,941.69

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Solution

The fourth proportional to 28,718.19, 43,078.10 and 7,941.69 is: 11,912.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,718.19 : 43,078.10 = 7,941.69 : x
  2. Step 2: Convert to fraction form
    28,718.19/43,078.10 = 7,941.69/x
  3. Step 3: Cross multiply
    28,718.19x = 43,078.10 × 7,941.69
  4. Step 4: Simplify right side
    28,718.19x = 342,112,915.99
  5. Step 5: Solve for x
    x = 342,112,915.99/28,718.19
  6. Step 6: Final answer
    x = 11,912.76

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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.