Home / 11,815.03-16,304.79-7,102.05

Finding the Fourth Proportional to 11,815.03, 16,304.79 and 7,102.05

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Solution

The fourth proportional to 11,815.03, 16,304.79 and 7,102.05 is: 9,800.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,815.03 : 16,304.79 = 7,102.05 : x
  2. Step 2: Convert to fraction form
    11,815.03/16,304.79 = 7,102.05/x
  3. Step 3: Cross multiply
    11,815.03x = 16,304.79 × 7,102.05
  4. Step 4: Simplify right side
    11,815.03x = 115,797,399.31
  5. Step 5: Solve for x
    x = 115,797,399.31/11,815.03
  6. Step 6: Final answer
    x = 9,800.85

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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.