Home / 11,078.64-15,354.54-10,871.28

Finding the Fourth Proportional to 11,078.64, 15,354.54 and 10,871.28

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Solution

The fourth proportional to 11,078.64, 15,354.54 and 10,871.28 is: 15,067.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,078.64 : 15,354.54 = 10,871.28 : x
  2. Step 2: Convert to fraction form
    11,078.64/15,354.54 = 10,871.28/x
  3. Step 3: Cross multiply
    11,078.64x = 15,354.54 × 10,871.28
  4. Step 4: Simplify right side
    11,078.64x = 166,923,503.61
  5. Step 5: Solve for x
    x = 166,923,503.61/11,078.64
  6. Step 6: Final answer
    x = 15,067.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.