Home / 11,505.16-15,877.20-6,469.60

Finding the Fourth Proportional to 11,505.16, 15,877.20 and 6,469.60

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Solution

The fourth proportional to 11,505.16, 15,877.20 and 6,469.60 is: 8,928.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,505.16 : 15,877.20 = 6,469.60 : x
  2. Step 2: Convert to fraction form
    11,505.16/15,877.20 = 6,469.60/x
  3. Step 3: Cross multiply
    11,505.16x = 15,877.20 × 6,469.60
  4. Step 4: Simplify right side
    11,505.16x = 102,719,133.12
  5. Step 5: Solve for x
    x = 102,719,133.12/11,505.16
  6. Step 6: Final answer
    x = 8,928.09

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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.