Home / 13,690.18-20,436.24-12,029.43

Finding the Fourth Proportional to 13,690.18, 20,436.24 and 12,029.43

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Solution

The fourth proportional to 13,690.18, 20,436.24 and 12,029.43 is: 17,957.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,690.18 : 20,436.24 = 12,029.43 : x
  2. Step 2: Convert to fraction form
    13,690.18/20,436.24 = 12,029.43/x
  3. Step 3: Cross multiply
    13,690.18x = 20,436.24 × 12,029.43
  4. Step 4: Simplify right side
    13,690.18x = 245,836,318.54
  5. Step 5: Solve for x
    x = 245,836,318.54/13,690.18
  6. Step 6: Final answer
    x = 17,957.13

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.