Home / 16,455.78-22,698.09-15,885.54

Finding the Fourth Proportional to 16,455.78, 22,698.09 and 15,885.54

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Solution

The fourth proportional to 16,455.78, 22,698.09 and 15,885.54 is: 21,911.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,455.78 : 22,698.09 = 15,885.54 : x
  2. Step 2: Convert to fraction form
    16,455.78/22,698.09 = 15,885.54/x
  3. Step 3: Cross multiply
    16,455.78x = 22,698.09 × 15,885.54
  4. Step 4: Simplify right side
    16,455.78x = 360,571,416.62
  5. Step 5: Solve for x
    x = 360,571,416.62/16,455.78
  6. Step 6: Final answer
    x = 21,911.54

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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.