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Finding the Fourth Proportional to 16,822.70, 25,212.45 and 12,907.70

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Solution

The fourth proportional to 16,822.70, 25,212.45 and 12,907.70 is: 19,344.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,822.70 : 25,212.45 = 12,907.70 : x
  2. Step 2: Convert to fraction form
    16,822.70/25,212.45 = 12,907.70/x
  3. Step 3: Cross multiply
    16,822.70x = 25,212.45 × 12,907.70
  4. Step 4: Simplify right side
    16,822.70x = 325,434,740.87
  5. Step 5: Solve for x
    x = 325,434,740.87/16,822.70
  6. Step 6: Final answer
    x = 19,344.98

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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.