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Finding the Fourth Proportional to 11,720.88, 17,580.48 and 5,057.08

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Solution

The fourth proportional to 11,720.88, 17,580.48 and 5,057.08 is: 7,585.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,720.88 : 17,580.48 = 5,057.08 : x
  2. Step 2: Convert to fraction form
    11,720.88/17,580.48 = 5,057.08/x
  3. Step 3: Cross multiply
    11,720.88x = 17,580.48 × 5,057.08
  4. Step 4: Simplify right side
    11,720.88x = 88,905,893.80
  5. Step 5: Solve for x
    x = 88,905,893.80/11,720.88
  6. Step 6: Final answer
    x = 7,585.26

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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.