Home / 20,561.10-30,822.75-7,410.26

Finding the Fourth Proportional to 20,561.10, 30,822.75 and 7,410.26

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Solution

The fourth proportional to 20,561.10, 30,822.75 and 7,410.26 is: 11,108.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,561.10 : 30,822.75 = 7,410.26 : x
  2. Step 2: Convert to fraction form
    20,561.10/30,822.75 = 7,410.26/x
  3. Step 3: Cross multiply
    20,561.10x = 30,822.75 × 7,410.26
  4. Step 4: Simplify right side
    20,561.10x = 228,404,437.30
  5. Step 5: Solve for x
    x = 228,404,437.30/20,561.10
  6. Step 6: Final answer
    x = 11,108.57

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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.