Home / 11,422.05-15,760.89-6,385.64

Finding the Fourth Proportional to 11,422.05, 15,760.89 and 6,385.64

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Solution

The fourth proportional to 11,422.05, 15,760.89 and 6,385.64 is: 8,811.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,422.05 : 15,760.89 = 6,385.64 : x
  2. Step 2: Convert to fraction form
    11,422.05/15,760.89 = 6,385.64/x
  3. Step 3: Cross multiply
    11,422.05x = 15,760.89 × 6,385.64
  4. Step 4: Simplify right side
    11,422.05x = 100,643,290.82
  5. Step 5: Solve for x
    x = 100,643,290.82/11,422.05
  6. Step 6: Final answer
    x = 8,811.32

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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.