Home / 13,429.28-20,142.37-3,569.36

Finding the Fourth Proportional to 13,429.28, 20,142.37 and 3,569.36

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Solution

The fourth proportional to 13,429.28, 20,142.37 and 3,569.36 is: 5,353.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,429.28 : 20,142.37 = 3,569.36 : x
  2. Step 2: Convert to fraction form
    13,429.28/20,142.37 = 3,569.36/x
  3. Step 3: Cross multiply
    13,429.28x = 20,142.37 × 3,569.36
  4. Step 4: Simplify right side
    13,429.28x = 71,895,369.78
  5. Step 5: Solve for x
    x = 71,895,369.78/13,429.28
  6. Step 6: Final answer
    x = 5,353.63

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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.