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Finding the Fourth Proportional to 17,393.40, 26,068.02 and 8,139

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Solution

The fourth proportional to 17,393.40, 26,068.02 and 8,139 is: 12,198.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,393.40 : 26,068.02 = 8,139 : x
  2. Step 2: Convert to fraction form
    17,393.40/26,068.02 = 8,139/x
  3. Step 3: Cross multiply
    17,393.40x = 26,068.02 × 8,139
  4. Step 4: Simplify right side
    17,393.40x = 212,167,614.78
  5. Step 5: Solve for x
    x = 212,167,614.78/17,393.40
  6. Step 6: Final answer
    x = 12,198.17

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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.