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Finding the Fourth Proportional to 17,080.70, 25,630.76 and 13,639.82

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Solution

The fourth proportional to 17,080.70, 25,630.76 and 13,639.82 is: 20,467.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,080.70 : 25,630.76 = 13,639.82 : x
  2. Step 2: Convert to fraction form
    17,080.70/25,630.76 = 13,639.82/x
  3. Step 3: Cross multiply
    17,080.70x = 25,630.76 × 13,639.82
  4. Step 4: Simplify right side
    17,080.70x = 349,598,858.81
  5. Step 5: Solve for x
    x = 349,598,858.81/17,080.70
  6. Step 6: Final answer
    x = 20,467.48

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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.