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Finding the Fourth Proportional to 13,700.50, 18,906.70 and 7,733.44

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Solution

The fourth proportional to 13,700.50, 18,906.70 and 7,733.44 is: 10,672.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,700.50 : 18,906.70 = 7,733.44 : x
  2. Step 2: Convert to fraction form
    13,700.50/18,906.70 = 7,733.44/x
  3. Step 3: Cross multiply
    13,700.50x = 18,906.70 × 7,733.44
  4. Step 4: Simplify right side
    13,700.50x = 146,213,830.05
  5. Step 5: Solve for x
    x = 146,213,830.05/13,700.50
  6. Step 6: Final answer
    x = 10,672.15

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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.