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Finding the Fourth Proportional to 10,640.90, 15,963.89 and 5,362.94

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Solution

The fourth proportional to 10,640.90, 15,963.89 and 5,362.94 is: 8,045.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,640.90 : 15,963.89 = 5,362.94 : x
  2. Step 2: Convert to fraction form
    10,640.90/15,963.89 = 5,362.94/x
  3. Step 3: Cross multiply
    10,640.90x = 15,963.89 × 5,362.94
  4. Step 4: Simplify right side
    10,640.90x = 85,613,397.33
  5. Step 5: Solve for x
    x = 85,613,397.33/10,640.90
  6. Step 6: Final answer
    x = 8,045.69

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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.