Home / 11,155.88-15,395-6,119.86

Finding the Fourth Proportional to 11,155.88, 15,395 and 6,119.86

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Solution

The fourth proportional to 11,155.88, 15,395 and 6,119.86 is: 8,445.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,155.88 : 15,395 = 6,119.86 : x
  2. Step 2: Convert to fraction form
    11,155.88/15,395 = 6,119.86/x
  3. Step 3: Cross multiply
    11,155.88x = 15,395 × 6,119.86
  4. Step 4: Simplify right side
    11,155.88x = 94,215,244.70
  5. Step 5: Solve for x
    x = 94,215,244.70/11,155.88
  6. Step 6: Final answer
    x = 8,445.34

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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.