Home / 11,689.78-17,528.43-5,108.26

Finding the Fourth Proportional to 11,689.78, 17,528.43 and 5,108.26

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Solution

The fourth proportional to 11,689.78, 17,528.43 and 5,108.26 is: 7,659.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,689.78 : 17,528.43 = 5,108.26 : x
  2. Step 2: Convert to fraction form
    11,689.78/17,528.43 = 5,108.26/x
  3. Step 3: Cross multiply
    11,689.78x = 17,528.43 × 5,108.26
  4. Step 4: Simplify right side
    11,689.78x = 89,539,690.19
  5. Step 5: Solve for x
    x = 89,539,690.19/11,689.78
  6. Step 6: Final answer
    x = 7,659.66

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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.