Home / 13,242.78-19,864.16-3,381.70

Finding the Fourth Proportional to 13,242.78, 19,864.16 and 3,381.70

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Solution

The fourth proportional to 13,242.78, 19,864.16 and 3,381.70 is: 5,072.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,242.78 : 19,864.16 = 3,381.70 : x
  2. Step 2: Convert to fraction form
    13,242.78/19,864.16 = 3,381.70/x
  3. Step 3: Cross multiply
    13,242.78x = 19,864.16 × 3,381.70
  4. Step 4: Simplify right side
    13,242.78x = 67,174,629.87
  5. Step 5: Solve for x
    x = 67,174,629.87/13,242.78
  6. Step 6: Final answer
    x = 5,072.55

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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.