Home / 13,429.35-20,143.92-3,569.32

Finding the Fourth Proportional to 13,429.35, 20,143.92 and 3,569.32

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Solution

The fourth proportional to 13,429.35, 20,143.92 and 3,569.32 is: 5,353.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,429.35 : 20,143.92 = 3,569.32 : x
  2. Step 2: Convert to fraction form
    13,429.35/20,143.92 = 3,569.32/x
  3. Step 3: Cross multiply
    13,429.35x = 20,143.92 × 3,569.32
  4. Step 4: Simplify right side
    13,429.35x = 71,900,135.10
  5. Step 5: Solve for x
    x = 71,900,135.10/13,429.35
  6. Step 6: Final answer
    x = 5,353.95

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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.