Home / 10,991.15-15,167.85-6,145.88

Finding the Fourth Proportional to 10,991.15, 15,167.85 and 6,145.88

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Solution

The fourth proportional to 10,991.15, 15,167.85 and 6,145.88 is: 8,481.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,991.15 : 15,167.85 = 6,145.88 : x
  2. Step 2: Convert to fraction form
    10,991.15/15,167.85 = 6,145.88/x
  3. Step 3: Cross multiply
    10,991.15x = 15,167.85 × 6,145.88
  4. Step 4: Simplify right side
    10,991.15x = 93,219,710.12
  5. Step 5: Solve for x
    x = 93,219,710.12/10,991.15
  6. Step 6: Final answer
    x = 8,481.35

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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.