Home / 16,262.78-22,431.33-12,900.87

Finding the Fourth Proportional to 16,262.78, 22,431.33 and 12,900.87

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Solution

The fourth proportional to 16,262.78, 22,431.33 and 12,900.87 is: 17,794.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,262.78 : 22,431.33 = 12,900.87 : x
  2. Step 2: Convert to fraction form
    16,262.78/22,431.33 = 12,900.87/x
  3. Step 3: Cross multiply
    16,262.78x = 22,431.33 × 12,900.87
  4. Step 4: Simplify right side
    16,262.78x = 289,383,672.26
  5. Step 5: Solve for x
    x = 289,383,672.26/16,262.78
  6. Step 6: Final answer
    x = 17,794.24

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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.