Home / 13,931.82-20,895.46-4,068.78

Finding the Fourth Proportional to 13,931.82, 20,895.46 and 4,068.78

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Solution

The fourth proportional to 13,931.82, 20,895.46 and 4,068.78 is: 6,102.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,931.82 : 20,895.46 = 4,068.78 : x
  2. Step 2: Convert to fraction form
    13,931.82/20,895.46 = 4,068.78/x
  3. Step 3: Cross multiply
    13,931.82x = 20,895.46 × 4,068.78
  4. Step 4: Simplify right side
    13,931.82x = 85,019,029.74
  5. Step 5: Solve for x
    x = 85,019,029.74/13,931.82
  6. Step 6: Final answer
    x = 6,102.51

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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.