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Finding the Fourth Proportional to 13,493.70, 20,240.55 and 11,306.70

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Solution

The fourth proportional to 13,493.70, 20,240.55 and 11,306.70 is: 16,960.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,493.70 : 20,240.55 = 11,306.70 : x
  2. Step 2: Convert to fraction form
    13,493.70/20,240.55 = 11,306.70/x
  3. Step 3: Cross multiply
    13,493.70x = 20,240.55 × 11,306.70
  4. Step 4: Simplify right side
    13,493.70x = 228,853,826.69
  5. Step 5: Solve for x
    x = 228,853,826.69/13,493.70
  6. Step 6: Final answer
    x = 16,960.05

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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.