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Finding the Fourth Proportional to 12,573.51, 18,863.10 and 4,254

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Solution

The fourth proportional to 12,573.51, 18,863.10 and 4,254 is: 6,381.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,573.51 : 18,863.10 = 4,254 : x
  2. Step 2: Convert to fraction form
    12,573.51/18,863.10 = 4,254/x
  3. Step 3: Cross multiply
    12,573.51x = 18,863.10 × 4,254
  4. Step 4: Simplify right side
    12,573.51x = 80,243,627.40
  5. Step 5: Solve for x
    x = 80,243,627.40/12,573.51
  6. Step 6: Final answer
    x = 6,381.96

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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.