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Finding the Fourth Proportional to 10,876.37, 15,009.07 and 6,399.09

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Solution

The fourth proportional to 10,876.37, 15,009.07 and 6,399.09 is: 8,830.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,876.37 : 15,009.07 = 6,399.09 : x
  2. Step 2: Convert to fraction form
    10,876.37/15,009.07 = 6,399.09/x
  3. Step 3: Cross multiply
    10,876.37x = 15,009.07 × 6,399.09
  4. Step 4: Simplify right side
    10,876.37x = 96,044,389.75
  5. Step 5: Solve for x
    x = 96,044,389.75/10,876.37
  6. Step 6: Final answer
    x = 8,830.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.