Home / 13,289.19-19,933.52-3,428.39

Finding the Fourth Proportional to 13,289.19, 19,933.52 and 3,428.39

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Solution

The fourth proportional to 13,289.19, 19,933.52 and 3,428.39 is: 5,142.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,289.19 : 19,933.52 = 3,428.39 : x
  2. Step 2: Convert to fraction form
    13,289.19/19,933.52 = 3,428.39/x
  3. Step 3: Cross multiply
    13,289.19x = 19,933.52 × 3,428.39
  4. Step 4: Simplify right side
    13,289.19x = 68,339,763.82
  5. Step 5: Solve for x
    x = 68,339,763.82/13,289.19
  6. Step 6: Final answer
    x = 5,142.51

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1.5x scale

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.