Home / 10,644.10-15,983.94-6,650.78

Finding the Fourth Proportional to 10,644.10, 15,983.94 and 6,650.78

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Solution

The fourth proportional to 10,644.10, 15,983.94 and 6,650.78 is: 9,987.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,644.10 : 15,983.94 = 6,650.78 : x
  2. Step 2: Convert to fraction form
    10,644.10/15,983.94 = 6,650.78/x
  3. Step 3: Cross multiply
    10,644.10x = 15,983.94 × 6,650.78
  4. Step 4: Simplify right side
    10,644.10x = 106,305,668.47
  5. Step 5: Solve for x
    x = 106,305,668.47/10,644.10
  6. Step 6: Final answer
    x = 9,987.29

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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.