Home / 20,669.28-30,999.24-5,877.84

Finding the Fourth Proportional to 20,669.28, 30,999.24 and 5,877.84

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Solution

The fourth proportional to 20,669.28, 30,999.24 and 5,877.84 is: 8,815.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,669.28 : 30,999.24 = 5,877.84 : x
  2. Step 2: Convert to fraction form
    20,669.28/30,999.24 = 5,877.84/x
  3. Step 3: Cross multiply
    20,669.28x = 30,999.24 × 5,877.84
  4. Step 4: Simplify right side
    20,669.28x = 182,208,572.84
  5. Step 5: Solve for x
    x = 182,208,572.84/20,669.28
  6. Step 6: Final answer
    x = 8,815.43

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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.