Home / 13,722.53-18,936-7,754.72

Finding the Fourth Proportional to 13,722.53, 18,936 and 7,754.72

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Solution

The fourth proportional to 13,722.53, 18,936 and 7,754.72 is: 10,700.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,722.53 : 18,936 = 7,754.72 : x
  2. Step 2: Convert to fraction form
    13,722.53/18,936 = 7,754.72/x
  3. Step 3: Cross multiply
    13,722.53x = 18,936 × 7,754.72
  4. Step 4: Simplify right side
    13,722.53x = 146,843,377.92
  5. Step 5: Solve for x
    x = 146,843,377.92/13,722.53
  6. Step 6: Final answer
    x = 10,700.90

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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.