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Finding the Fourth Proportional to 13,260.97, 19,889.97 and 3,400.48

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Solution

The fourth proportional to 13,260.97, 19,889.97 and 3,400.48 is: 5,100.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,260.97 : 19,889.97 = 3,400.48 : x
  2. Step 2: Convert to fraction form
    13,260.97/19,889.97 = 3,400.48/x
  3. Step 3: Cross multiply
    13,260.97x = 19,889.97 × 3,400.48
  4. Step 4: Simplify right side
    13,260.97x = 67,635,445.19
  5. Step 5: Solve for x
    x = 67,635,445.19/13,260.97
  6. Step 6: Final answer
    x = 5,100.34

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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.