Home / 11,145.06-15,380.12-6,109.49

Finding the Fourth Proportional to 11,145.06, 15,380.12 and 6,109.49

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Solution

The fourth proportional to 11,145.06, 15,380.12 and 6,109.49 is: 8,431.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,145.06 : 15,380.12 = 6,109.49 : x
  2. Step 2: Convert to fraction form
    11,145.06/15,380.12 = 6,109.49/x
  3. Step 3: Cross multiply
    11,145.06x = 15,380.12 × 6,109.49
  4. Step 4: Simplify right side
    11,145.06x = 93,964,697.24
  5. Step 5: Solve for x
    x = 93,964,697.24/11,145.06
  6. Step 6: Final answer
    x = 8,431.06

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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.