Home / 19,929.72-27,505.50-12,876.60

Finding the Fourth Proportional to 19,929.72, 27,505.50 and 12,876.60

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Solution

The fourth proportional to 19,929.72, 27,505.50 and 12,876.60 is: 17,771.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,929.72 : 27,505.50 = 12,876.60 : x
  2. Step 2: Convert to fraction form
    19,929.72/27,505.50 = 12,876.60/x
  3. Step 3: Cross multiply
    19,929.72x = 27,505.50 × 12,876.60
  4. Step 4: Simplify right side
    19,929.72x = 354,177,321.30
  5. Step 5: Solve for x
    x = 354,177,321.30/19,929.72
  6. Step 6: Final answer
    x = 17,771.31

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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.