Home / 11,125.20-15,351.72-6,648.06

Finding the Fourth Proportional to 11,125.20, 15,351.72 and 6,648.06

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Solution

The fourth proportional to 11,125.20, 15,351.72 and 6,648.06 is: 9,173.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,125.20 : 15,351.72 = 6,648.06 : x
  2. Step 2: Convert to fraction form
    11,125.20/15,351.72 = 6,648.06/x
  3. Step 3: Cross multiply
    11,125.20x = 15,351.72 × 6,648.06
  4. Step 4: Simplify right side
    11,125.20x = 102,059,155.66
  5. Step 5: Solve for x
    x = 102,059,155.66/11,125.20
  6. Step 6: Final answer
    x = 9,173.69

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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.