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Finding the Fourth Proportional to 16,857.78, 25,287.54 and 12,914.70

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Solution

The fourth proportional to 16,857.78, 25,287.54 and 12,914.70 is: 19,372.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,857.78 : 25,287.54 = 12,914.70 : x
  2. Step 2: Convert to fraction form
    16,857.78/25,287.54 = 12,914.70/x
  3. Step 3: Cross multiply
    16,857.78x = 25,287.54 × 12,914.70
  4. Step 4: Simplify right side
    16,857.78x = 326,580,992.84
  5. Step 5: Solve for x
    x = 326,580,992.84/16,857.78
  6. Step 6: Final answer
    x = 19,372.72

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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.