Home / 11,156.07-15,395.58-6,120.78

Finding the Fourth Proportional to 11,156.07, 15,395.58 and 6,120.78

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Solution

The fourth proportional to 11,156.07, 15,395.58 and 6,120.78 is: 8,446.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,156.07 : 15,395.58 = 6,120.78 : x
  2. Step 2: Convert to fraction form
    11,156.07/15,395.58 = 6,120.78/x
  3. Step 3: Cross multiply
    11,156.07x = 15,395.58 × 6,120.78
  4. Step 4: Simplify right side
    11,156.07x = 94,232,958.15
  5. Step 5: Solve for x
    x = 94,232,958.15/11,156.07
  6. Step 6: Final answer
    x = 8,446.79

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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.