Home / 12,252.87-18,381.13-5,679.72

Finding the Fourth Proportional to 12,252.87, 18,381.13 and 5,679.72

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Solution

The fourth proportional to 12,252.87, 18,381.13 and 5,679.72 is: 8,520.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,252.87 : 18,381.13 = 5,679.72 : x
  2. Step 2: Convert to fraction form
    12,252.87/18,381.13 = 5,679.72/x
  3. Step 3: Cross multiply
    12,252.87x = 18,381.13 × 5,679.72
  4. Step 4: Simplify right side
    12,252.87x = 104,399,657.48
  5. Step 5: Solve for x
    x = 104,399,657.48/12,252.87
  6. Step 6: Final answer
    x = 8,520.42

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1.5x scale

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.