Home / 12,251.79-18,381.26-3,931.62

Finding the Fourth Proportional to 12,251.79, 18,381.26 and 3,931.62

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Solution

The fourth proportional to 12,251.79, 18,381.26 and 3,931.62 is: 5,898.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,251.79 : 18,381.26 = 3,931.62 : x
  2. Step 2: Convert to fraction form
    12,251.79/18,381.26 = 3,931.62/x
  3. Step 3: Cross multiply
    12,251.79x = 18,381.26 × 3,931.62
  4. Step 4: Simplify right side
    12,251.79x = 72,268,173.74
  5. Step 5: Solve for x
    x = 72,268,173.74/12,251.79
  6. Step 6: Final answer
    x = 5,898.58

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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.