Home / 11,005.20-15,179.38-6,756.48

Finding the Fourth Proportional to 11,005.20, 15,179.38 and 6,756.48

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Solution

The fourth proportional to 11,005.20, 15,179.38 and 6,756.48 is: 9,319.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,005.20 : 15,179.38 = 6,756.48 : x
  2. Step 2: Convert to fraction form
    11,005.20/15,179.38 = 6,756.48/x
  3. Step 3: Cross multiply
    11,005.20x = 15,179.38 × 6,756.48
  4. Step 4: Simplify right side
    11,005.20x = 102,559,177.38
  5. Step 5: Solve for x
    x = 102,559,177.38/11,005.20
  6. Step 6: Final answer
    x = 9,319.16

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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.