Home / 10,115.05-13,958.44-6,340.25

Finding the Fourth Proportional to 10,115.05, 13,958.44 and 6,340.25

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Solution

The fourth proportional to 10,115.05, 13,958.44 and 6,340.25 is: 8,749.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,115.05 : 13,958.44 = 6,340.25 : x
  2. Step 2: Convert to fraction form
    10,115.05/13,958.44 = 6,340.25/x
  3. Step 3: Cross multiply
    10,115.05x = 13,958.44 × 6,340.25
  4. Step 4: Simplify right side
    10,115.05x = 88,499,999.21
  5. Step 5: Solve for x
    x = 88,499,999.21/10,115.05
  6. Step 6: Final answer
    x = 8,749.34

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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.