Home / 8,736.90-13,108.09-5,620.43

Finding the Fourth Proportional to 8,736.90, 13,108.09 and 5,620.43

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Solution

The fourth proportional to 8,736.90, 13,108.09 and 5,620.43 is: 8,432.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,736.90 : 13,108.09 = 5,620.43 : x
  2. Step 2: Convert to fraction form
    8,736.90/13,108.09 = 5,620.43/x
  3. Step 3: Cross multiply
    8,736.90x = 13,108.09 × 5,620.43
  4. Step 4: Simplify right side
    8,736.90x = 73,673,102.28
  5. Step 5: Solve for x
    x = 73,673,102.28/8,736.90
  6. Step 6: Final answer
    x = 8,432.41

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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.