Home / 20,606-28,436.28-11,174.57

Finding the Fourth Proportional to 20,606, 28,436.28 and 11,174.57

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Solution

The fourth proportional to 20,606, 28,436.28 and 11,174.57 is: 15,420.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,606 : 28,436.28 = 11,174.57 : x
  2. Step 2: Convert to fraction form
    20,606/28,436.28 = 11,174.57/x
  3. Step 3: Cross multiply
    20,606x = 28,436.28 × 11,174.57
  4. Step 4: Simplify right side
    20,606x = 317,763,201.40
  5. Step 5: Solve for x
    x = 317,763,201.40/20,606
  6. Step 6: Final answer
    x = 15,420.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.