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Finding the Fourth Proportional to 17,647.80, 26,463.92 and 8,290.47

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Solution

The fourth proportional to 17,647.80, 26,463.92 and 8,290.47 is: 12,432.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,647.80 : 26,463.92 = 8,290.47 : x
  2. Step 2: Convert to fraction form
    17,647.80/26,463.92 = 8,290.47/x
  3. Step 3: Cross multiply
    17,647.80x = 26,463.92 × 8,290.47
  4. Step 4: Simplify right side
    17,647.80x = 219,398,401.00
  5. Step 5: Solve for x
    x = 219,398,401.00/17,647.80
  6. Step 6: Final answer
    x = 12,432.06

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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.