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Finding the Fourth Proportional to 10,640.70, 15,963.66 and 5,362.74

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Solution

The fourth proportional to 10,640.70, 15,963.66 and 5,362.74 is: 8,045.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,640.70 : 15,963.66 = 5,362.74 : x
  2. Step 2: Convert to fraction form
    10,640.70/15,963.66 = 5,362.74/x
  3. Step 3: Cross multiply
    10,640.70x = 15,963.66 × 5,362.74
  4. Step 4: Simplify right side
    10,640.70x = 85,608,958.03
  5. Step 5: Solve for x
    x = 85,608,958.03/10,640.70
  6. Step 6: Final answer
    x = 8,045.43

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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.