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Finding the Fourth Proportional to 17,690.70, 24,408.75 and 11,395.50

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Solution

The fourth proportional to 17,690.70, 24,408.75 and 11,395.50 is: 15,722.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,690.70 : 24,408.75 = 11,395.50 : x
  2. Step 2: Convert to fraction form
    17,690.70/24,408.75 = 11,395.50/x
  3. Step 3: Cross multiply
    17,690.70x = 24,408.75 × 11,395.50
  4. Step 4: Simplify right side
    17,690.70x = 278,149,910.63
  5. Step 5: Solve for x
    x = 278,149,910.63/17,690.70
  6. Step 6: Final answer
    x = 15,722.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.