Home / 22,668.72-33,930.32-12,112.40

Finding the Fourth Proportional to 22,668.72, 33,930.32 and 12,112.40

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Solution

The fourth proportional to 22,668.72, 33,930.32 and 12,112.40 is: 18,129.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,668.72 : 33,930.32 = 12,112.40 : x
  2. Step 2: Convert to fraction form
    22,668.72/33,930.32 = 12,112.40/x
  3. Step 3: Cross multiply
    22,668.72x = 33,930.32 × 12,112.40
  4. Step 4: Simplify right side
    22,668.72x = 410,977,607.97
  5. Step 5: Solve for x
    x = 410,977,607.97/22,668.72
  6. Step 6: Final answer
    x = 18,129.72

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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.