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Finding the Fourth Proportional to 13,706.64, 18,916.96 and 10,179.92

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Solution

The fourth proportional to 13,706.64, 18,916.96 and 10,179.92 is: 14,049.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,706.64 : 18,916.96 = 10,179.92 : x
  2. Step 2: Convert to fraction form
    13,706.64/18,916.96 = 10,179.92/x
  3. Step 3: Cross multiply
    13,706.64x = 18,916.96 × 10,179.92
  4. Step 4: Simplify right side
    13,706.64x = 192,573,139.44
  5. Step 5: Solve for x
    x = 192,573,139.44/13,706.64
  6. Step 6: Final answer
    x = 14,049.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.