Home / 20,799.23-31,211.13-10,939.27

Finding the Fourth Proportional to 20,799.23, 31,211.13 and 10,939.27

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Solution

The fourth proportional to 20,799.23, 31,211.13 and 10,939.27 is: 16,415.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,799.23 : 31,211.13 = 10,939.27 : x
  2. Step 2: Convert to fraction form
    20,799.23/31,211.13 = 10,939.27/x
  3. Step 3: Cross multiply
    20,799.23x = 31,211.13 × 10,939.27
  4. Step 4: Simplify right side
    20,799.23x = 341,426,978.08
  5. Step 5: Solve for x
    x = 341,426,978.08/20,799.23
  6. Step 6: Final answer
    x = 16,415.37

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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.