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Finding the Fourth Proportional to 14,487.64, 19,992.92 and 7,863.64

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Solution

The fourth proportional to 14,487.64, 19,992.92 and 7,863.64 is: 10,851.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,487.64 : 19,992.92 = 7,863.64 : x
  2. Step 2: Convert to fraction form
    14,487.64/19,992.92 = 7,863.64/x
  3. Step 3: Cross multiply
    14,487.64x = 19,992.92 × 7,863.64
  4. Step 4: Simplify right side
    14,487.64x = 157,217,125.43
  5. Step 5: Solve for x
    x = 157,217,125.43/14,487.64
  6. Step 6: Final answer
    x = 10,851.81

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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.