Home / 13,931.48-20,897.15-3,401.56

Finding the Fourth Proportional to 13,931.48, 20,897.15 and 3,401.56

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Solution

The fourth proportional to 13,931.48, 20,897.15 and 3,401.56 is: 5,102.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,931.48 : 20,897.15 = 3,401.56 : x
  2. Step 2: Convert to fraction form
    13,931.48/20,897.15 = 3,401.56/x
  3. Step 3: Cross multiply
    13,931.48x = 20,897.15 × 3,401.56
  4. Step 4: Simplify right side
    13,931.48x = 71,082,788.06
  5. Step 5: Solve for x
    x = 71,082,788.06/13,931.48
  6. Step 6: Final answer
    x = 5,102.31

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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.