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Finding the Fourth Proportional to 13,951.71, 20,890.31 and 11,737.37

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Solution

The fourth proportional to 13,951.71, 20,890.31 and 11,737.37 is: 17,574.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,951.71 : 20,890.31 = 11,737.37 : x
  2. Step 2: Convert to fraction form
    13,951.71/20,890.31 = 11,737.37/x
  3. Step 3: Cross multiply
    13,951.71x = 20,890.31 × 11,737.37
  4. Step 4: Simplify right side
    13,951.71x = 245,197,291.42
  5. Step 5: Solve for x
    x = 245,197,291.42/13,951.71
  6. Step 6: Final answer
    x = 17,574.71

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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.