Home / 13,323.78-19,985.66-3,963.77

Finding the Fourth Proportional to 13,323.78, 19,985.66 and 3,963.77

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Solution

The fourth proportional to 13,323.78, 19,985.66 and 3,963.77 is: 5,945.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,323.78 : 19,985.66 = 3,963.77 : x
  2. Step 2: Convert to fraction form
    13,323.78/19,985.66 = 3,963.77/x
  3. Step 3: Cross multiply
    13,323.78x = 19,985.66 × 3,963.77
  4. Step 4: Simplify right side
    13,323.78x = 79,218,439.79
  5. Step 5: Solve for x
    x = 79,218,439.79/13,323.78
  6. Step 6: Final answer
    x = 5,945.64

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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.