Home / 11,090.43-15,304.64-6,839.78

Finding the Fourth Proportional to 11,090.43, 15,304.64 and 6,839.78

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Solution

The fourth proportional to 11,090.43, 15,304.64 and 6,839.78 is: 9,438.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,090.43 : 15,304.64 = 6,839.78 : x
  2. Step 2: Convert to fraction form
    11,090.43/15,304.64 = 6,839.78/x
  3. Step 3: Cross multiply
    11,090.43x = 15,304.64 × 6,839.78
  4. Step 4: Simplify right side
    11,090.43x = 104,680,259.86
  5. Step 5: Solve for x
    x = 104,680,259.86/11,090.43
  6. Step 6: Final answer
    x = 9,438.79

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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.