Home / 11,821.27-17,645.39-10,420.08

Finding the Fourth Proportional to 11,821.27, 17,645.39 and 10,420.08

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Solution

The fourth proportional to 11,821.27, 17,645.39 and 10,420.08 is: 15,553.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,821.27 : 17,645.39 = 10,420.08 : x
  2. Step 2: Convert to fraction form
    11,821.27/17,645.39 = 10,420.08/x
  3. Step 3: Cross multiply
    11,821.27x = 17,645.39 × 10,420.08
  4. Step 4: Simplify right side
    11,821.27x = 183,866,375.43
  5. Step 5: Solve for x
    x = 183,866,375.43/11,821.27
  6. Step 6: Final answer
    x = 15,553.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.