Home / 20,401.44-28,158.48-12,948

Finding the Fourth Proportional to 20,401.44, 28,158.48 and 12,948

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Solution

The fourth proportional to 20,401.44, 28,158.48 and 12,948 is: 17,871.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,401.44 : 28,158.48 = 12,948 : x
  2. Step 2: Convert to fraction form
    20,401.44/28,158.48 = 12,948/x
  3. Step 3: Cross multiply
    20,401.44x = 28,158.48 × 12,948
  4. Step 4: Simplify right side
    20,401.44x = 364,595,999.04
  5. Step 5: Solve for x
    x = 364,595,999.04/20,401.44
  6. Step 6: Final answer
    x = 17,871.09

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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.