Home / 11,905.80-17,845.90-4,507.40

Finding the Fourth Proportional to 11,905.80, 17,845.90 and 4,507.40

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Solution

The fourth proportional to 11,905.80, 17,845.90 and 4,507.40 is: 6,756.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,905.80 : 17,845.90 = 4,507.40 : x
  2. Step 2: Convert to fraction form
    11,905.80/17,845.90 = 4,507.40/x
  3. Step 3: Cross multiply
    11,905.80x = 17,845.90 × 4,507.40
  4. Step 4: Simplify right side
    11,905.80x = 80,438,609.66
  5. Step 5: Solve for x
    x = 80,438,609.66/11,905.80
  6. Step 6: Final answer
    x = 6,756.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.