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Finding the Fourth Proportional to 18,634.62, 25,698.11 and 14,378.93

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Solution

The fourth proportional to 18,634.62, 25,698.11 and 14,378.93 is: 19,829.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,634.62 : 25,698.11 = 14,378.93 : x
  2. Step 2: Convert to fraction form
    18,634.62/25,698.11 = 14,378.93/x
  3. Step 3: Cross multiply
    18,634.62x = 25,698.11 × 14,378.93
  4. Step 4: Simplify right side
    18,634.62x = 369,511,124.44
  5. Step 5: Solve for x
    x = 369,511,124.44/18,634.62
  6. Step 6: Final answer
    x = 19,829.28

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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.