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Finding the Fourth Proportional to 17,539.80, 26,348.10 and 12,355.80

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Solution

The fourth proportional to 17,539.80, 26,348.10 and 12,355.80 is: 18,560.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,539.80 : 26,348.10 = 12,355.80 : x
  2. Step 2: Convert to fraction form
    17,539.80/26,348.10 = 12,355.80/x
  3. Step 3: Cross multiply
    17,539.80x = 26,348.10 × 12,355.80
  4. Step 4: Simplify right side
    17,539.80x = 325,551,853.98
  5. Step 5: Solve for x
    x = 325,551,853.98/17,539.80
  6. Step 6: Final answer
    x = 18,560.75

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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.