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Finding the Fourth Proportional to 15,954.87, 23,895.90 and 7,640.76

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Solution

The fourth proportional to 15,954.87, 23,895.90 and 7,640.76 is: 11,443.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,954.87 : 23,895.90 = 7,640.76 : x
  2. Step 2: Convert to fraction form
    15,954.87/23,895.90 = 7,640.76/x
  3. Step 3: Cross multiply
    15,954.87x = 23,895.90 × 7,640.76
  4. Step 4: Simplify right side
    15,954.87x = 182,582,836.88
  5. Step 5: Solve for x
    x = 182,582,836.88/15,954.87
  6. Step 6: Final answer
    x = 11,443.71

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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.