Home / 10,876.20-15,008.44-6,399.08

Finding the Fourth Proportional to 10,876.20, 15,008.44 and 6,399.08

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Solution

The fourth proportional to 10,876.20, 15,008.44 and 6,399.08 is: 8,830.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,876.20 : 15,008.44 = 6,399.08 : x
  2. Step 2: Convert to fraction form
    10,876.20/15,008.44 = 6,399.08/x
  3. Step 3: Cross multiply
    10,876.20x = 15,008.44 × 6,399.08
  4. Step 4: Simplify right side
    10,876.20x = 96,040,208.24
  5. Step 5: Solve for x
    x = 96,040,208.24/10,876.20
  6. Step 6: Final answer
    x = 8,830.31

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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.