Home / 11,150.40-15,387.60-6,115.06

Finding the Fourth Proportional to 11,150.40, 15,387.60 and 6,115.06

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Solution

The fourth proportional to 11,150.40, 15,387.60 and 6,115.06 is: 8,438.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,150.40 : 15,387.60 = 6,115.06 : x
  2. Step 2: Convert to fraction form
    11,150.40/15,387.60 = 6,115.06/x
  3. Step 3: Cross multiply
    11,150.40x = 15,387.60 × 6,115.06
  4. Step 4: Simplify right side
    11,150.40x = 94,096,022.91
  5. Step 5: Solve for x
    x = 94,096,022.91/11,150.40
  6. Step 6: Final answer
    x = 8,438.80

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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.