Home / 11,215.90-15,478.66-6,180.12

Finding the Fourth Proportional to 11,215.90, 15,478.66 and 6,180.12

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Solution

The fourth proportional to 11,215.90, 15,478.66 and 6,180.12 is: 8,528.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,215.90 : 15,478.66 = 6,180.12 : x
  2. Step 2: Convert to fraction form
    11,215.90/15,478.66 = 6,180.12/x
  3. Step 3: Cross multiply
    11,215.90x = 15,478.66 × 6,180.12
  4. Step 4: Simplify right side
    11,215.90x = 95,659,976.24
  5. Step 5: Solve for x
    x = 95,659,976.24/11,215.90
  6. Step 6: Final answer
    x = 8,528.96

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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.