Home / 20,557.34-30,844.20-12,241.28

Finding the Fourth Proportional to 20,557.34, 30,844.20 and 12,241.28

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Solution

The fourth proportional to 20,557.34, 30,844.20 and 12,241.28 is: 18,366.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,557.34 : 30,844.20 = 12,241.28 : x
  2. Step 2: Convert to fraction form
    20,557.34/30,844.20 = 12,241.28/x
  3. Step 3: Cross multiply
    20,557.34x = 30,844.20 × 12,241.28
  4. Step 4: Simplify right side
    20,557.34x = 377,572,488.58
  5. Step 5: Solve for x
    x = 377,572,488.58/20,557.34
  6. Step 6: Final answer
    x = 18,366.80

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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.