Home / 20,458.89-28,229.03-11,959.37

Finding the Fourth Proportional to 20,458.89, 28,229.03 and 11,959.37

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Solution

The fourth proportional to 20,458.89, 28,229.03 and 11,959.37 is: 16,501.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,458.89 : 28,229.03 = 11,959.37 : x
  2. Step 2: Convert to fraction form
    20,458.89/28,229.03 = 11,959.37/x
  3. Step 3: Cross multiply
    20,458.89x = 28,229.03 × 11,959.37
  4. Step 4: Simplify right side
    20,458.89x = 337,601,213.57
  5. Step 5: Solve for x
    x = 337,601,213.57/20,458.89
  6. Step 6: Final answer
    x = 16,501.45

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1.5x scale

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.