Home / 11,478.38-17,220.29-6,218.64

Finding the Fourth Proportional to 11,478.38, 17,220.29 and 6,218.64

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Solution

The fourth proportional to 11,478.38, 17,220.29 and 6,218.64 is: 9,329.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,478.38 : 17,220.29 = 6,218.64 : x
  2. Step 2: Convert to fraction form
    11,478.38/17,220.29 = 6,218.64/x
  3. Step 3: Cross multiply
    11,478.38x = 17,220.29 × 6,218.64
  4. Step 4: Simplify right side
    11,478.38x = 107,086,753.11
  5. Step 5: Solve for x
    x = 107,086,753.11/11,478.38
  6. Step 6: Final answer
    x = 9,329.43

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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.