Home / 13,288.80-19,933.64-3,428.08

Finding the Fourth Proportional to 13,288.80, 19,933.64 and 3,428.08

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Solution

The fourth proportional to 13,288.80, 19,933.64 and 3,428.08 is: 5,142.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,288.80 : 19,933.64 = 3,428.08 : x
  2. Step 2: Convert to fraction form
    13,288.80/19,933.64 = 3,428.08/x
  3. Step 3: Cross multiply
    13,288.80x = 19,933.64 × 3,428.08
  4. Step 4: Simplify right side
    13,288.80x = 68,334,112.61
  5. Step 5: Solve for x
    x = 68,334,112.61/13,288.80
  6. Step 6: Final answer
    x = 5,142.23

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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.