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Finding the Fourth Proportional to 17,390.79, 26,064.81 and 8,017.80

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Solution

The fourth proportional to 17,390.79, 26,064.81 and 8,017.80 is: 12,016.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,390.79 : 26,064.81 = 8,017.80 : x
  2. Step 2: Convert to fraction form
    17,390.79/26,064.81 = 8,017.80/x
  3. Step 3: Cross multiply
    17,390.79x = 26,064.81 × 8,017.80
  4. Step 4: Simplify right side
    17,390.79x = 208,982,338.39
  5. Step 5: Solve for x
    x = 208,982,338.39/17,390.79
  6. Step 6: Final answer
    x = 12,016.84

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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.