Home / 15,815.43-23,735.79-7,917.63

Finding the Fourth Proportional to 15,815.43, 23,735.79 and 7,917.63

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Solution

The fourth proportional to 15,815.43, 23,735.79 and 7,917.63 is: 11,882.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,815.43 : 23,735.79 = 7,917.63 : x
  2. Step 2: Convert to fraction form
    15,815.43/23,735.79 = 7,917.63/x
  3. Step 3: Cross multiply
    15,815.43x = 23,735.79 × 7,917.63
  4. Step 4: Simplify right side
    15,815.43x = 187,931,202.98
  5. Step 5: Solve for x
    x = 187,931,202.98/15,815.43
  6. Step 6: Final answer
    x = 11,882.78

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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.