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Finding the Fourth Proportional to 17,078.70, 25,615.89 and 5,393.10

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Solution

The fourth proportional to 17,078.70, 25,615.89 and 5,393.10 is: 8,088.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,078.70 : 25,615.89 = 5,393.10 : x
  2. Step 2: Convert to fraction form
    17,078.70/25,615.89 = 5,393.10/x
  3. Step 3: Cross multiply
    17,078.70x = 25,615.89 × 5,393.10
  4. Step 4: Simplify right side
    17,078.70x = 138,149,056.36
  5. Step 5: Solve for x
    x = 138,149,056.36/17,078.70
  6. Step 6: Final answer
    x = 8,088.97

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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.