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Finding the Fourth Proportional to 18,379.41, 27,510.59 and 14,639.64

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Solution

The fourth proportional to 18,379.41, 27,510.59 and 14,639.64 is: 21,912.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,379.41 : 27,510.59 = 14,639.64 : x
  2. Step 2: Convert to fraction form
    18,379.41/27,510.59 = 14,639.64/x
  3. Step 3: Cross multiply
    18,379.41x = 27,510.59 × 14,639.64
  4. Step 4: Simplify right side
    18,379.41x = 402,744,923.04
  5. Step 5: Solve for x
    x = 402,744,923.04/18,379.41
  6. Step 6: Final answer
    x = 21,912.84

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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.