Home / 13,288.29-19,932.40-3,928.42

Finding the Fourth Proportional to 13,288.29, 19,932.40 and 3,928.42

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Solution

The fourth proportional to 13,288.29, 19,932.40 and 3,928.42 is: 5,892.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,288.29 : 19,932.40 = 3,928.42 : x
  2. Step 2: Convert to fraction form
    13,288.29/19,932.40 = 3,928.42/x
  3. Step 3: Cross multiply
    13,288.29x = 19,932.40 × 3,928.42
  4. Step 4: Simplify right side
    13,288.29x = 78,302,838.81
  5. Step 5: Solve for x
    x = 78,302,838.81/13,288.29
  6. Step 6: Final answer
    x = 5,892.62

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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.